unconditionedresponse(UR)in classical conditioning, anunlearned, naturallyoccurring response (suchas salivation) to anunconditioned stimulus(US) (such as food in themouth). (Myers Psychologyfor AP 3e p. 274)middleearthe chamber between theeardrum and cochleacontaining three tiny bones(hammer, anvil, and stirrup)that concentrate thevibrations of the eardrumon the cochlea's ovalwindow.inattentionalblindnessfailing to seevisible objectswhen ourattention isdirectedelsewherefrequencythe number ofcompletewavelengths thatpass a point in agiven time (forexample, persecond).pupilthe adjustableopening in thecenter of theeye throughwhich lightenters.perceptionthe process oforganizing andinterpreting sensoryinformation, enablingus to recognizemeaningful objectsand events.binocularcuea depth cue,such as retinaldisparity, thatdepends on theuse of two eyes.colorconstancyperceiving familiarobjects as havingconsistent color, evenif changingillumination alters thewavelengthsreflected by theobject.nervoussystemthe body's speedy,electrochemicalcommunicationnetwork, consisting ofall the nerve cells ofthe peripheral andcentral nervoussystems.thalamusthe brain's sensory controlcenter, located on top ofthe brainstem; it directsmessages to the sensoryreceiving areas in thecortex and transmits repliesto the cerebellum andmedullareinforcementin operantconditioning, anyevent thatstrengthens thebehavior it follows.(Myers Psychologyfor AP 3e p. 284)opponent-processtheorythe theory that opposingretinal processes (red-green, blue-yellow, white-black) enable color vision.For example, some cellsare stimulated by greenand inhibited by red; othersare stimulated by red andinhibited by green.reuptakeaneurotransmitter'sreabsorption bythe sendingneuron.neurotransmitterschemical messengers thatcross the synaptic gapsbetween neurons. Whenreleased by the sendingneuron, neurotransmitterstravel across the synapseand bind to receptor siteson the receiving neuron,thereby influencing whetherthat neuron will gechangeblindnessfailing to noticechanges in theenvironment; aform ofinattentionalblindness.bottom-upprocessinganalysis that beginswith the sensoryreceptors and worksup to the brain'sintegration of sensoryinformation.antagonista molecule that,by binding to areceptor site,inhibits or blocksa response.negativereinforcementincreasing behaviors bystopping or reducingaversive stimuli. A negativereinforcer is any stimulusthat, when removed after aresponse, strengthens theresponse. (Note: Negativereinforcement is notpunishment.) (MyersPsychology for AP 3e p. neutralstimulus(NS)in classicalconditioning, astimulus that elicitsno response beforeconditioning. (MyersPsychology for AP 3ep. 273)RogerSperrylike Gazzaniga,studied split brainpatients; showedthat left/righthemispheres havedifferent functionsprimaryreinforceran innatelyreinforcing stimulus,such as one thatsatisfies a biologicalneed. (MyersPsychology for AP 3ep. 286)reflexa simple,automaticresponse to asensory stimulus,such as the knee-jerk response.signaldetectiontheorya theory predicting howand when we detect thepresence of a faint stimulus(signal) amid backgroundstimulation (noise).Assumes there is no singleabsolute threshold and thatdetection depends partlyon a person's experience,expectations, motineurona nerve cell;the basicbuilding blockof the nervoussystem.somatosensorycortexarea at the front ofthe parietal lobes thatregisters andprocesses bodytouch and movementsensations.gate-controltheorythe theory that the spinalcord contains aneurological "gate" thatblocks pain signals orallows them to pass on tothe brain. The "gate" isopened by the activity ofpain signals traveling upsmall nerve fibers and isclosed by activity in largMichaelGazzanigasplit-brain research;understanding offunctionallateralization in thebrain; how thecerebral hemispherescommunicateplasticitythe brain's ability tochange, especiallyduring childhood, byreorganizing afterdamage or bybuilding newpathways based onexperience.vestibularsenseour sense of bodymovement andposition thatenables our senseof balance.insighta sudden realizationof a problem'ssolution; contrastswith strategy-basedsolutions. (MyersPsychology for AP 3epp. 304, 370)Young-Helmholtztrichromatic(three-color)theorythe theory that the retinacontains three differenttypes of color receptors—one most sensitive to red,one to green, one to blue—which, when stimulated incombination, can producethe perception of any colorcerebralcortexthe intricate fabric ofinterconnected neuralcells covering thecerebral hemispheres;the body's ultimatecontrol andinformation-processingcenter.intensitythe amount of energyin a light wave orsound wave, whichinfluences what weperceive as brightnessor loudness. Intensityis determined by thewave's amplitude(height).amygdalatwo lima-bean-sized neuralclusters in thelimbic system;linked toemotion.sensoryadaptationdiminishedsensitivity as aconsequence ofconstantstimulation.nervesbundled axons thatform neural "cables"connecting thecentral nervoussystem with muscles,glands, and senseorgans.featuredetectorsnerve cells in thebrain's visual cortexthat respond tospecific features ofthe stimulus, such asshape, angle, ormovement.shapingan operantconditioning procedurein which reinforcersguide behavior towardcloser and closerapproximations of thedesired behavior.(Myers Psychology forAP 3e p. 284)gestaltan organized whole.Gestalt psychologistsemphasized ourtendency to integratepieces of informationinto meaningfulwholes.mirrorneuronsfrontal lobe neurons thatsome scientists believe firewhen we perform certainactions or observe anotherdoing so. The brain'smirroring of another'saction may enable imitationand empathy. (MyersPsychology for AP 3e p.313)brainstemthe oldest part andcentral core of thebrain, beginning wherethe spinal cord swellsas it enters the skull;the brainstem isresponsible forautomatic survivalfunctionsconesretinal receptors thatare concentrated nearthe center of the retinaand that function indaylight or in well-litconditions. Conesdetect fine detail andgive rise to colorsensations.law ofeffectThorndike's principle thatbehaviors followed byfavorable consequencesbecome more likely, andthat behaviors followed byunfavorable consequencesbecome less likely. (MyersPsychology for AP 3e p.283)variable-ratioschedulein operant conditioning,a reinforcementschedule thatreinforces a responseafter an unpredictablenumber of responses.(Myers Psychology forAP 3e p. 288)perceptualconstancyperceiving objects asunchanging (havingconsistent color,brightness, shape,and size) even asillumination andretinal imageschange.foveathe central focalpoint in theretina, aroundwhich the eye'scones cluster.selectiveattentionthe focusingof consciousawareness ona particularstimulusmodelingthe process ofobserving andimitating a specificbehavior. (MyersPsychology for AP3e p. 312)agonista molecule that,by binding to areceptor site,stimulates aresponsehormoneschemicalmessengers that aremanufactured by theendocrine glands,travel through thebloodstream, andaffect other tissues.extinctionthe diminishing of aconditioned response; occursin classical conditioning whenan unconditioned stimulus(US) does not follow aconditioned stimulus (CS);occurs in operant conditioningwhen a response is no longerreinforced. (Myers Psychologyretinathe light-sensitiveinner surface of theeye, containing thereceptor rods andcones plus layers ofneurons that beginthe processing ofvisual information.observationallearninglearning byobserving others.(Also called sociallearning.) (MyersPsychology for AP3e p. 312)innerearthe innermost partof the ear,containing thecochlea,semicircularcanals, andvestibular sacs.synapsethe junction betweenthe axon tip of thesending neuron andthe dendrite or cellbody of the receivingneuron. The tiny gap atthis junction is calledthe synaptic gap orsynaptic cleft.cochleaa coiled, bony, fluid-filled tube in the innerear; sound wavestraveling through thecochlear fluid triggernerve impulses.cognitivelearningthe acquisition ofmental information,whether by observingevents, by watchingothers, or throughlanguage. (MyersPsychology for AP 3ep. 272)fixed-ratioschedulein operant conditioning,a reinforcementschedule thatreinforces a responseonly after a specifiednumber of responses.(Myers Psychology forAP 3e p. 288)Weber'slawthe principle that, tobe perceived asdifferent, two stimulimust differ by aconstant minimumpercentage (ratherthan a constantamount).spontaneousrecoverythe reappearance,after a pause, of anextinguishedconditionedresponse. (MyersPsychology for AP 3ep. 276)habituationdecreasingresponsiveness withrepeated exposure toa stimulus. (MyersPsychology for AP 3epp. 271, 491)huethe dimension ofcolor that isdetermined by thewavelength of light;what we know as thecolor names blue,green, and so forth.dendritesa neuron's bushy,branching extensionsthat receivemessages andconduct impulsestoward the cell body.continuousreinforcementschedulereinforcing thedesired responseevery time itoccurs. (MyersPsychology for AP3e p. 287)sympatheticnervoussystemthe division of theautonomic nervoussystem that arousesthe body, mobilizingits energy in stressfulsituations.IvanPavlovRussian physiologist;discovered classicalconditioning; traineddogs to salivate atthe ringing of a bellhypothalamusa neural structure lyingbelow (hypo) the thalamus;it directs severalmaintenance activities(eating, drinking, bodytemperature), helps governthe endocrine system viathe pituitary gland, and islinked to emotion andreward.corpuscallosumthe large band ofneural fibersconnecting the twobrain hemispheresand carryingmessages betweenthem.temporallobesportion of thecerebral cortex lyingroughly above theears; includes theauditory areas, eachreceiving informationprimarily from theopposite ear.centralnervoussystem(CNS)the brainand spinalcord.JohnB.Watsonbehaviorism; emphasison external behaviorsof people and theirreactions on a givensituation; famous forLittle Albert study inwhich baby was taughtto fear a white ratelectroencephalogram(EEG)an amplified recordingof the waves ofelectrical activitysweeping across thebrain's surface. Thesewaves are measuredby electrodes placedon the scalp.conductionhearinglossa less common formof hearing loss,caused by damage tothe mechanicalsystem that conductssound waves to thecochlea.fMRI(functionalMRI)a technique forrevealing bloodflowand, therefore, brainactivity by comparingsuccessive MRI scans.fMRI scans show brainfunction as well as itsstructure.EdwardTolmancognitivepsychologist;latent learningand cognitivemapsensorineuralhearing losshearing loss caused bydamage to thecochlea's receptor cellsor to the auditorynerves; the mostcommon form ofhearing loss, alsocalled nerve deafness.neurogenesistheformationof newneurons.refractoryperioda period ofinactivityafter aneuron hasfired.lensthe transparentstructure behindthe pupil thatchanges shape tohelp focus imageson the retina.opticnervethe nerve thatcarries neuralimpulsesfrom the eyeto the brain.olfactionthesense ofsmell.wavelengththe distance from the peakof one light or sound waveto the peak of the next.Electromagneticwavelengths vary from theshort blips of gamma raysto the long pulses of radiotransmission. (MyersPsychology for AP 3e p.177)endorphins"morphinewithin"—natural,opiate-likeneurotransmitterslinked to paincontrol and topleasure.MRI(magneticresonanceimaging)a technique that usesmagnetic fields andradio waves toproduce computer -generated images ofsoft tissue. MRIscans show brainanatomy.phiphenomenonan illusion ofmovement createdwhen two or moreadjacent lights blinkon and off in quicksuccessionsubliminalbelow one'sabsolutethreshold forconsciousawarenessclassicalconditioninga type of learning in whichwe link two or more stimuli;as a result, to illustrate withPavlov's classicexperiment, the firststimulus (a tone) comes toelicit behavior (drooling) inanticipation of the secondstimulus (food). (MyersPsychologyperceptualseta mentalpredispositionto perceiveone thing andnot another.dualprocessingthe principle thatinformation is oftensimultaneouslyprocessed onseparate consciousand unconscioustrackssensationthe process by whichour sensoryreceptors andnervous systemreceive andrepresent stimulusenergies from ourenvironment.variable-intervalschedulein operant conditioning,a reinforcementschedule thatreinforces a responseat unpredictable timeintervals. (MyersPsychology for AP 3ep. 288)adrenalglandsa pair of endocrineglands that sit justabove the kidneys andsecrete hormones(epinephrine andnorepinephrine) thathelp arouse the bodyin times of stress.retinaldisparitya binocular cue forperceiving depth. Bycomparing retinal imagesfrom the two eyes, thebrain computes distance—the greater the disparity(difference) between thetwo images, the closer theobjectmotionparallaxmonocular depthcues in whichobjects closer to usseem to move at afaster pace thanthose that arefarther away,PET(positronemissiontomography)scan a visual displayof brain activity thatdetects where aradioactive form ofglucose goes whilethe brain performs agiven task.lesiontissue destruction. Abrain lesion is anaturally orexperimentallycaused destruction ofbrain tissue.CT(computedtomography)scan a series of X-rayphotographs takenfrom different anglesand combined bycomputer into acompositerepresentation of aslice of the brain'sstructure.AlbertBanduraresearcher famousfor work inobservational orsocial learningincluding thefamous Bobo dollexperimentsomaticnervoussystemthe division of theperipheral nervoussystem that controlsthe body's skeletalmuscles. (Also calledthe skeletal nervoussystem.)EdwardThorndikePioneer in operantconditioning whodiscovered conceptsin instrumentallearning such as thelaw of effect. Knownfor his work with catsin puzzle boxes.differencethresholdthe minimum differencebetween two stimulirequired for detection50 percent of the time.We experience thedifference threshold asa just noticeabledifference (or jnd).axonthe neuron extensionthat passesmessages through itsbranches to otherneurons or tomuscles or glands.consciousnessourawarenessof ourselvesand ourenvironment.medullathe base of thebrainstem;controls heart-beat andbreathing.motor(efferent)neuronsneurons that carryoutgoinginformation fromthe brain andspinal cord to themuscles andglands.irisa ring of muscletissue that forms thecolored portion of theeye around the pupiland controls the sizeof the pupil opening.pituitaryglandthe endocrine system'smost influential gland.Under the influence ofthe hypothalamus, thepituitary regulatesgrowth and controlsother endocrineglands.interneuronsneurons within thebrain and spinal cordthat communicateinternally andintervene betweenthe sensory inputsand motor outputs.frequencytheoryin hearing, the theorythat the rate of nerveimpulses traveling upthe auditory nervematches the frequencyof a tone, thusenabling us to senseits pitch. (Also calledtemporal theory.)rodsretinal receptors thatdetect black, white,and gray, and aresensitive to movement;necessary forperipheral and twilightvision, when conesdon't respond.sensory(afferent)neuronsneurons that carryincominginformation fromthe sensoryreceptors to thebrain and spinalcordB.F.SkinnerBehaviorist thatdeveloped thetheory of operantconditioning bytraining pigeonsand ratsparasympatheticnervous systemthe division of theautonomicnervous systemthat calms thebody, conservingits energylearnedhelplessnessthe hopelessness andpassive resignation ananimal or personlearns when unable toavoid repeatedaversive events.(Myers Psychology forAP 3e p. 307)secondary(conditioned)reinforcera stimulus thatgains itsreinforcing powerthrough itsassociation with aprimary reinforcerpitcha tone'sexperiencedhighness orlowness;depends onfrequency.top-downprocessinginformationprocessing guided byhigher-level mentalprocesses, as whenwe constructperceptions drawingon our experienceand expectations.parietallobesportion of thecerebral cortex lyingat the top of the headand toward the rear;receives sensoryinput for touch andbody position.myelinsheatha fatty tissue layersegmentally encasingthe axons of someneurons; enablesvastly greatertransmission speed asneural impulses hopfrom one node to thenext.parrallelprocessingthe processingof manyaspects of aproblemsimultaneouslydepthperceptionthe ability to seeobjects in threedimensions althoughthe images that strikethe retina are two-dimensional; allowsus to judge distance.partial(intermittent)reinforcementschedulereinforcing a response onlypart of the time; results inslower acquisition of aresponse but much greaterresistance to extinctionthan does continuousreinforcement. (MyersPsychology for AP 3e p.287)unconditionedstimulus (US)in classical conditioning, astimulus thatunconditionally—naturallyand automatically—triggersan unconditioned responseUR). (Myers Psychology forAP 3e p. 274)thresholdthe level ofstimulationrequired totrigger a neuralimpulse.associationareasareas of the cerebral cortexthat are not involved inprimary motor or sensoryfunctions; rather, they areinvolved in higher mentalfunctions such as learning,remembering, thinking, andspeaking.kinesthesiaour movement sense—our system forsensing the positionand movement ofindividual body arts.corneathe eye's clear,protective outerlayer, coveringthe pupil andiris.placetheoryin hearing, the theorythat links the pitch wehear with the placewhere the cochlea'smembrane isstimulated.limbicsystemneural system(including thehippocampus,amygdala, andhypothalamus) locatedbelow the cerebralhemispheres;associated withemotions and drives.actionpotentiala neuralimpulse; a briefelectricalcharge thattravels down anaxon.frontallobesportion of thecerebral cortex lyingjust behind theforehead; involved inspeaking and musclemovements and inmaking plans andjudgments.discrimination(1) in classical conditioning,the learned ability todistinguish between aconditioned stimulus andsimilar stimuli that do notsignal an unconditionedstimulus. (In operantconditioning, the ability todistinguish responses thatare reinforcedPaulBrocadiscovered area inthe brain (namedfor him) in the leftfrontal loberesponsible forlanguageproductionmonocularcuea depth cue, suchas interposition orlinear perspective,available to eithereye alone.sensoryreceptorssensorynerveendings thatrespond tostimuli.cerebellumthe "little brain" at therear of the brainstem;functions includeprocessing sensoryinput, coordinatingmovement output andbalance, and enablingnonverbal learning andmemory.occipitallobesportion of thecerebral cortex lyingat the back of thehead; includes areasthat receiveinformation from thevisual fields.transductionconversion of one formof energy into another.In sensation, thetransforming ofstimulus energies,such as sights,sounds, and smells,into neural impulsesour brain can interpret.autonomicnervoussystem(ANS)the part of the peripheralnervous system thatcontrols the glands and themuscles of the internalorgans (such as the heart).Its sympathetic divisionarouses; itsparasympathetic divisioncalms.fixed-intervalschedulein operant conditioning,a reinforcementschedule thatreinforces a responseonly after a specifiedtime has elapsed.(Myers Psychology forAP 3e p. 288)operantconditioninga type of learning inwhich a behaviorbecomes more likely torecur if followed by areinforcer or less likelyto recur if followed by apunisher. (MyersPsychology for AP 3ep. 283)endocrinesystemthe body's "slow"chemicalcommunicationsystem; a set ofglands that secretehormones into thebloodstream.reticularformationa nerve network thattravels through thebrainstem andthalamus and playsan important role incontrolling arousal.splitbraina condition resultingfrom surgery thatisolates the brain'stwo hemispheres bycutting the fibers(mainly those of thecorpus callosum)connecting them.latentlearninglearning that occursbut is not apparentuntil there is anincentive todemonstrate it.(Myers Psychologyfor AP 3e p. 304)positivereinforcementincreasing behaviors bypresenting positivereinforcers. A positivereinforcer is any stimulusthat, when presented aftera response, strengthensthe response. (MyersPsychology for AP 3e p.285)punishmentan event thattends to decreasethe behavior that itfollows. (MyersPsychology for AP3e p. 289)figure-groundthe organization ofthe visual field intoobjects (the figures)that stand out fromtheir surroundings(the ground).cognitivemapa mental representation ofthe layout of one'senvironment. For example,after exploring a maze, ratsact as if they have learneda cognitive map of it.(Myers Psychology for AP3e p. 304)blindspotthe point at whichthe optic nerveleaves the eye,creating a "blind"spot because noreceptor cells arelocated there.all-or-noneresponsea neuron'sreaction of eitherfiring (with a full-strength response)or not firing.higher-orderconditioninga procedure in which theconditioned stimulus in oneconditioning experience ispaired with a new neutralstimulus, creating a second(often weaker) conditionedstimulus. For example, ananimal that has learnedthat a tone predicts foodmight theauditionthe senseor act ofhearing.primingthe activation, oftenunconsciously, ofcertain associations,thus predisposingone's perception,memory, orresponse.conditionedresponse(CR)in classicalconditioning, alearned response toa previously neutral(but now conditioned)stimulus (CS). (MyersPsychology for AP 3ep. 274)generalizationthe tendency, once aresponse has beenconditioned, for stimulisimilar to the conditionedstimulus to elicit similarresponses. (In operantconditioning, generalizationoccurs when responseslearned in one situationoccur in other, similarsituCarlWernickean area of the brain (inthe left temporal lobe)involved in languagecomprehension andexpression was namedfor him because hediscovered itheritabilitythe proportion ofvariation amongindividuals that we canattribute to genes. Theheritability of a traitmay vary, dependingon the range ofpopulations andenvironments studied.motorcortexan area at therear of thefrontal lobesthat controlsvoluntarymovements.acquisitionin classical conditioning theinitial stage, when one linksa neutral stimulus and anunconditioned stimulus sothat the neutral stimulusbegins triggering theconditioned response. Inoperant conditioning, thestrengthening of areinforced respobehaviorgeneticsthe study of therelative power andlimits of geneticand environmentalinfluences onbehavior.glialcells(glia)cells in the nervoussystem that support,nourish, and protectneurons; they mayalso play a role inlearning and thinking.conditionedstimulus(CS)in classical conditioning, anoriginally neutral stimulusthat, after association withan unconditioned stimulus(US), comes to trigger aconditioned response (CR).(Myers Psychology for AP3e p. 274)peripheralnervoussystem(PNS)the sensory andmotor neurons thatconnect thecentral nervoussystem (CNS) tothe rest of thebody.unconditionedresponse(UR)in classical conditioning, anunlearned, naturallyoccurring response (suchas salivation) to anunconditioned stimulus(US) (such as food in themouth). (Myers Psychologyfor AP 3e p. 274)middleearthe chamber between theeardrum and cochleacontaining three tiny bones(hammer, anvil, and stirrup)that concentrate thevibrations of the eardrumon the cochlea's ovalwindow.inattentionalblindnessfailing to seevisible objectswhen ourattention isdirectedelsewherefrequencythe number ofcompletewavelengths thatpass a point in agiven time (forexample, persecond).pupilthe adjustableopening in thecenter of theeye throughwhich lightenters.perceptionthe process oforganizing andinterpreting sensoryinformation, enablingus to recognizemeaningful objectsand events.binocularcuea depth cue,such as retinaldisparity, thatdepends on theuse of two eyes.colorconstancyperceiving familiarobjects as havingconsistent color, evenif changingillumination alters thewavelengthsreflected by theobject.nervoussystemthe body's speedy,electrochemicalcommunicationnetwork, consisting ofall the nerve cells ofthe peripheral andcentral nervoussystems.thalamusthe brain's sensory controlcenter, located on top ofthe brainstem; it directsmessages to the sensoryreceiving areas in thecortex and transmits repliesto the cerebellum andmedullareinforcementin operantconditioning, anyevent thatstrengthens thebehavior it follows.(Myers Psychologyfor AP 3e p. 284)opponent-processtheorythe theory that opposingretinal processes (red-green, blue-yellow, white-black) enable color vision.For example, some cellsare stimulated by greenand inhibited by red; othersare stimulated by red andinhibited by green.reuptakeaneurotransmitter'sreabsorption bythe sendingneuron.neurotransmitterschemical messengers thatcross the synaptic gapsbetween neurons. Whenreleased by the sendingneuron, neurotransmitterstravel across the synapseand bind to receptor siteson the receiving neuron,thereby influencing whetherthat neuron will gechangeblindnessfailing to noticechanges in theenvironment; aform ofinattentionalblindness.bottom-upprocessinganalysis that beginswith the sensoryreceptors and worksup to the brain'sintegration of sensoryinformation.antagonista molecule that,by binding to areceptor site,inhibits or blocksa response.negativereinforcementincreasing behaviors bystopping or reducingaversive stimuli. A negativereinforcer is any stimulusthat, when removed after aresponse, strengthens theresponse. (Note: Negativereinforcement is notpunishment.) (MyersPsychology for AP 3e p. neutralstimulus(NS)in classicalconditioning, astimulus that elicitsno response beforeconditioning. (MyersPsychology for AP 3ep. 273)RogerSperrylike Gazzaniga,studied split brainpatients; showedthat left/righthemispheres havedifferent functionsprimaryreinforceran innatelyreinforcing stimulus,such as one thatsatisfies a biologicalneed. (MyersPsychology for AP 3ep. 286)reflexa simple,automaticresponse to asensory stimulus,such as the knee-jerk response.signaldetectiontheorya theory predicting howand when we detect thepresence of a faint stimulus(signal) amid backgroundstimulation (noise).Assumes there is no singleabsolute threshold and thatdetection depends partlyon a person's experience,expectations, motineurona nerve cell;the basicbuilding blockof the nervoussystem.somatosensorycortexarea at the front ofthe parietal lobes thatregisters andprocesses bodytouch and movementsensations.gate-controltheorythe theory that the spinalcord contains aneurological "gate" thatblocks pain signals orallows them to pass on tothe brain. The "gate" isopened by the activity ofpain signals traveling upsmall nerve fibers and isclosed by activity in largMichaelGazzanigasplit-brain research;understanding offunctionallateralization in thebrain; how thecerebral hemispherescommunicateplasticitythe brain's ability tochange, especiallyduring childhood, byreorganizing afterdamage or bybuilding newpathways based onexperience.vestibularsenseour sense of bodymovement andposition thatenables our senseof balance.insighta sudden realizationof a problem'ssolution; contrastswith strategy-basedsolutions. (MyersPsychology for AP 3epp. 304, 370)Young-Helmholtztrichromatic(three-color)theorythe theory that the retinacontains three differenttypes of color receptors—one most sensitive to red,one to green, one to blue—which, when stimulated incombination, can producethe perception of any colorcerebralcortexthe intricate fabric ofinterconnected neuralcells covering thecerebral hemispheres;the body's ultimatecontrol andinformation-processingcenter.intensitythe amount of energyin a light wave orsound wave, whichinfluences what weperceive as brightnessor loudness. Intensityis determined by thewave's amplitude(height).amygdalatwo lima-bean-sized neuralclusters in thelimbic system;linked toemotion.sensoryadaptationdiminishedsensitivity as aconsequence ofconstantstimulation.nervesbundled axons thatform neural "cables"connecting thecentral nervoussystem with muscles,glands, and senseorgans.featuredetectorsnerve cells in thebrain's visual cortexthat respond tospecific features ofthe stimulus, such asshape, angle, ormovement.shapingan operantconditioning procedurein which reinforcersguide behavior towardcloser and closerapproximations of thedesired behavior.(Myers Psychology forAP 3e p. 284)gestaltan organized whole.Gestalt psychologistsemphasized ourtendency to integratepieces of informationinto meaningfulwholes.mirrorneuronsfrontal lobe neurons thatsome scientists believe firewhen we perform certainactions or observe anotherdoing so. The brain'smirroring of another'saction may enable imitationand empathy. (MyersPsychology for AP 3e p.313)brainstemthe oldest part andcentral core of thebrain, beginning wherethe spinal cord swellsas it enters the skull;the brainstem isresponsible forautomatic survivalfunctionsconesretinal receptors thatare concentrated nearthe center of the retinaand that function indaylight or in well-litconditions. Conesdetect fine detail andgive rise to colorsensations.law ofeffectThorndike's principle thatbehaviors followed byfavorable consequencesbecome more likely, andthat behaviors followed byunfavorable consequencesbecome less likely. (MyersPsychology for AP 3e p.283)variable-ratioschedulein operant conditioning,a reinforcementschedule thatreinforces a responseafter an unpredictablenumber of responses.(Myers Psychology forAP 3e p. 288)perceptualconstancyperceiving objects asunchanging (havingconsistent color,brightness, shape,and size) even asillumination andretinal imageschange.foveathe central focalpoint in theretina, aroundwhich the eye'scones cluster.selectiveattentionthe focusingof consciousawareness ona particularstimulusmodelingthe process ofobserving andimitating a specificbehavior. (MyersPsychology for AP3e p. 312)agonista molecule that,by binding to areceptor site,stimulates aresponsehormoneschemicalmessengers that aremanufactured by theendocrine glands,travel through thebloodstream, andaffect other tissues.extinctionthe diminishing of aconditioned response; occursin classical conditioning whenan unconditioned stimulus(US) does not follow aconditioned stimulus (CS);occurs in operant conditioningwhen a response is no longerreinforced. (Myers Psychologyretinathe light-sensitiveinner surface of theeye, containing thereceptor rods andcones plus layers ofneurons that beginthe processing ofvisual information.observationallearninglearning byobserving others.(Also called sociallearning.) (MyersPsychology for AP3e p. 312)innerearthe innermost partof the ear,containing thecochlea,semicircularcanals, andvestibular sacs.synapsethe junction betweenthe axon tip of thesending neuron andthe dendrite or cellbody of the receivingneuron. The tiny gap atthis junction is calledthe synaptic gap orsynaptic cleft.cochleaa coiled, bony, fluid-filled tube in the innerear; sound wavestraveling through thecochlear fluid triggernerve impulses.cognitivelearningthe acquisition ofmental information,whether by observingevents, by watchingothers, or throughlanguage. (MyersPsychology for AP 3ep. 272)fixed-ratioschedulein operant conditioning,a reinforcementschedule thatreinforces a responseonly after a specifiednumber of responses.(Myers Psychology forAP 3e p. 288)Weber'slawthe principle that, tobe perceived asdifferent, two stimulimust differ by aconstant minimumpercentage (ratherthan a constantamount).spontaneousrecoverythe reappearance,after a pause, of anextinguishedconditionedresponse. (MyersPsychology for AP 3ep. 276)habituationdecreasingresponsiveness withrepeated exposure toa stimulus. (MyersPsychology for AP 3epp. 271, 491)huethe dimension ofcolor that isdetermined by thewavelength of light;what we know as thecolor names blue,green, and so forth.dendritesa neuron's bushy,branching extensionsthat receivemessages andconduct impulsestoward the cell body.continuousreinforcementschedulereinforcing thedesired responseevery time itoccurs. (MyersPsychology for AP3e p. 287)sympatheticnervoussystemthe division of theautonomic nervoussystem that arousesthe body, mobilizingits energy in stressfulsituations.IvanPavlovRussian physiologist;discovered classicalconditioning; traineddogs to salivate atthe ringing of a bellhypothalamusa neural structure lyingbelow (hypo) the thalamus;it directs severalmaintenance activities(eating, drinking, bodytemperature), helps governthe endocrine system viathe pituitary gland, and islinked to emotion andreward.corpuscallosumthe large band ofneural fibersconnecting the twobrain hemispheresand carryingmessages betweenthem.temporallobesportion of thecerebral cortex lyingroughly above theears; includes theauditory areas, eachreceiving informationprimarily from theopposite ear.centralnervoussystem(CNS)the brainand spinalcord.JohnB.Watsonbehaviorism; emphasison external behaviorsof people and theirreactions on a givensituation; famous forLittle Albert study inwhich baby was taughtto fear a white ratelectroencephalogram(EEG)an amplified recordingof the waves ofelectrical activitysweeping across thebrain's surface. Thesewaves are measuredby electrodes placedon the scalp.conductionhearinglossa less common formof hearing loss,caused by damage tothe mechanicalsystem that conductssound waves to thecochlea.fMRI(functionalMRI)a technique forrevealing bloodflowand, therefore, brainactivity by comparingsuccessive MRI scans.fMRI scans show brainfunction as well as itsstructure.EdwardTolmancognitivepsychologist;latent learningand cognitivemapsensorineuralhearing losshearing loss caused bydamage to thecochlea's receptor cellsor to the auditorynerves; the mostcommon form ofhearing loss, alsocalled nerve deafness.neurogenesistheformationof newneurons.refractoryperioda period ofinactivityafter aneuron hasfired.lensthe transparentstructure behindthe pupil thatchanges shape tohelp focus imageson the retina.opticnervethe nerve thatcarries neuralimpulsesfrom the eyeto the brain.olfactionthesense ofsmell.wavelengththe distance from the peakof one light or sound waveto the peak of the next.Electromagneticwavelengths vary from theshort blips of gamma raysto the long pulses of radiotransmission. (MyersPsychology for AP 3e p.177)endorphins"morphinewithin"—natural,opiate-likeneurotransmitterslinked to paincontrol and topleasure.MRI(magneticresonanceimaging)a technique that usesmagnetic fields andradio waves toproduce computer -generated images ofsoft tissue. MRIscans show brainanatomy.phiphenomenonan illusion ofmovement createdwhen two or moreadjacent lights blinkon and off in quicksuccessionsubliminalbelow one'sabsolutethreshold forconsciousawarenessclassicalconditioninga type of learning in whichwe link two or more stimuli;as a result, to illustrate withPavlov's classicexperiment, the firststimulus (a tone) comes toelicit behavior (drooling) inanticipation of the secondstimulus (food). (MyersPsychologyperceptualseta mentalpredispositionto perceiveone thing andnot another.dualprocessingthe principle thatinformation is oftensimultaneouslyprocessed onseparate consciousand unconscioustrackssensationthe process by whichour sensoryreceptors andnervous systemreceive andrepresent stimulusenergies from ourenvironment.variable-intervalschedulein operant conditioning,a reinforcementschedule thatreinforces a responseat unpredictable timeintervals. (MyersPsychology for AP 3ep. 288)adrenalglandsa pair of endocrineglands that sit justabove the kidneys andsecrete hormones(epinephrine andnorepinephrine) thathelp arouse the bodyin times of stress.retinaldisparitya binocular cue forperceiving depth. Bycomparing retinal imagesfrom the two eyes, thebrain computes distance—the greater the disparity(difference) between thetwo images, the closer theobjectmotionparallaxmonocular depthcues in whichobjects closer to usseem to move at afaster pace thanthose that arefarther away,PET(positronemissiontomography)scan a visual displayof brain activity thatdetects where aradioactive form ofglucose goes whilethe brain performs agiven task.lesiontissue destruction. Abrain lesion is anaturally orexperimentallycaused destruction ofbrain tissue.CT(computedtomography)scan a series of X-rayphotographs takenfrom different anglesand combined bycomputer into acompositerepresentation of aslice of the brain'sstructure.AlbertBanduraresearcher famousfor work inobservational orsocial learningincluding thefamous Bobo dollexperimentsomaticnervoussystemthe division of theperipheral nervoussystem that controlsthe body's skeletalmuscles. (Also calledthe skeletal nervoussystem.)EdwardThorndikePioneer in operantconditioning whodiscovered conceptsin instrumentallearning such as thelaw of effect. Knownfor his work with catsin puzzle boxes.differencethresholdthe minimum differencebetween two stimulirequired for detection50 percent of the time.We experience thedifference threshold asa just noticeabledifference (or jnd).axonthe neuron extensionthat passesmessages through itsbranches to otherneurons or tomuscles or glands.consciousnessourawarenessof ourselvesand ourenvironment.medullathe base of thebrainstem;controls heart-beat andbreathing.motor(efferent)neuronsneurons that carryoutgoinginformation fromthe brain andspinal cord to themuscles andglands.irisa ring of muscletissue that forms thecolored portion of theeye around the pupiland controls the sizeof the pupil opening.pituitaryglandthe endocrine system'smost influential gland.Under the influence ofthe hypothalamus, thepituitary regulatesgrowth and controlsother endocrineglands.interneuronsneurons within thebrain and spinal cordthat communicateinternally andintervene betweenthe sensory inputsand motor outputs.frequencytheoryin hearing, the theorythat the rate of nerveimpulses traveling upthe auditory nervematches the frequencyof a tone, thusenabling us to senseits pitch. (Also calledtemporal theory.)rodsretinal receptors thatdetect black, white,and gray, and aresensitive to movement;necessary forperipheral and twilightvision, when conesdon't respond.sensory(afferent)neuronsneurons that carryincominginformation fromthe sensoryreceptors to thebrain and spinalcordB.F.SkinnerBehaviorist thatdeveloped thetheory of operantconditioning bytraining pigeonsand ratsparasympatheticnervous systemthe division of theautonomicnervous systemthat calms thebody, conservingits energylearnedhelplessnessthe hopelessness andpassive resignation ananimal or personlearns when unable toavoid repeatedaversive events.(Myers Psychology forAP 3e p. 307)secondary(conditioned)reinforcera stimulus thatgains itsreinforcing powerthrough itsassociation with aprimary reinforcerpitcha tone'sexperiencedhighness orlowness;depends onfrequency.top-downprocessinginformationprocessing guided byhigher-level mentalprocesses, as whenwe constructperceptions drawingon our experienceand expectations.parietallobesportion of thecerebral cortex lyingat the top of the headand toward the rear;receives sensoryinput for touch andbody position.myelinsheatha fatty tissue layersegmentally encasingthe axons of someneurons; enablesvastly greatertransmission speed asneural impulses hopfrom one node to thenext.parrallelprocessingthe processingof manyaspects of aproblemsimultaneouslydepthperceptionthe ability to seeobjects in threedimensions althoughthe images that strikethe retina are two-dimensional; allowsus to judge distance.partial(intermittent)reinforcementschedulereinforcing a response onlypart of the time; results inslower acquisition of aresponse but much greaterresistance to extinctionthan does continuousreinforcement. (MyersPsychology for AP 3e p.287)unconditionedstimulus (US)in classical conditioning, astimulus thatunconditionally—naturallyand automatically—triggersan unconditioned responseUR). (Myers Psychology forAP 3e p. 274)thresholdthe level ofstimulationrequired totrigger a neuralimpulse.associationareasareas of the cerebral cortexthat are not involved inprimary motor or sensoryfunctions; rather, they areinvolved in higher mentalfunctions such as learning,remembering, thinking, andspeaking.kinesthesiaour movement sense—our system forsensing the positionand movement ofindividual body arts.corneathe eye's clear,protective outerlayer, coveringthe pupil andiris.placetheoryin hearing, the theorythat links the pitch wehear with the placewhere the cochlea'smembrane isstimulated.limbicsystemneural system(including thehippocampus,amygdala, andhypothalamus) locatedbelow the cerebralhemispheres;associated withemotions and drives.actionpotentiala neuralimpulse; a briefelectricalcharge thattravels down anaxon.frontallobesportion of thecerebral cortex lyingjust behind theforehead; involved inspeaking and musclemovements and inmaking plans andjudgments.discrimination(1) in classical conditioning,the learned ability todistinguish between aconditioned stimulus andsimilar stimuli that do notsignal an unconditionedstimulus. (In operantconditioning, the ability todistinguish responses thatare reinforcedPaulBrocadiscovered area inthe brain (namedfor him) in the leftfrontal loberesponsible forlanguageproductionmonocularcuea depth cue, suchas interposition orlinear perspective,available to eithereye alone.sensoryreceptorssensorynerveendings thatrespond tostimuli.cerebellumthe "little brain" at therear of the brainstem;functions includeprocessing sensoryinput, coordinatingmovement output andbalance, and enablingnonverbal learning andmemory.occipitallobesportion of thecerebral cortex lyingat the back of thehead; includes areasthat receiveinformation from thevisual fields.transductionconversion of one formof energy into another.In sensation, thetransforming ofstimulus energies,such as sights,sounds, and smells,into neural impulsesour brain can interpret.autonomicnervoussystem(ANS)the part of the peripheralnervous system thatcontrols the glands and themuscles of the internalorgans (such as the heart).Its sympathetic divisionarouses; itsparasympathetic divisioncalms.fixed-intervalschedulein operant conditioning,a reinforcementschedule thatreinforces a responseonly after a specifiedtime has elapsed.(Myers Psychology forAP 3e p. 288)operantconditioninga type of learning inwhich a behaviorbecomes more likely torecur if followed by areinforcer or less likelyto recur if followed by apunisher. (MyersPsychology for AP 3ep. 283)endocrinesystemthe body's "slow"chemicalcommunicationsystem; a set ofglands that secretehormones into thebloodstream.reticularformationa nerve network thattravels through thebrainstem andthalamus and playsan important role incontrolling arousal.splitbraina condition resultingfrom surgery thatisolates the brain'stwo hemispheres bycutting the fibers(mainly those of thecorpus callosum)connecting them.latentlearninglearning that occursbut is not apparentuntil there is anincentive todemonstrate it.(Myers Psychologyfor AP 3e p. 304)positivereinforcementincreasing behaviors bypresenting positivereinforcers. A positivereinforcer is any stimulusthat, when presented aftera response, strengthensthe response. (MyersPsychology for AP 3e p.285)punishmentan event thattends to decreasethe behavior that itfollows. (MyersPsychology for AP3e p. 289)figure-groundthe organization ofthe visual field intoobjects (the figures)that stand out fromtheir surroundings(the ground).cognitivemapa mental representation ofthe layout of one'senvironment. For example,after exploring a maze, ratsact as if they have learneda cognitive map of it.(Myers Psychology for AP3e p. 304)blindspotthe point at whichthe optic nerveleaves the eye,creating a "blind"spot because noreceptor cells arelocated there.all-or-noneresponsea neuron'sreaction of eitherfiring (with a full-strength response)or not firing.higher-orderconditioninga procedure in which theconditioned stimulus in oneconditioning experience ispaired with a new neutralstimulus, creating a second(often weaker) conditionedstimulus. For example, ananimal that has learnedthat a tone predicts foodmight theauditionthe senseor act ofhearing.primingthe activation, oftenunconsciously, ofcertain associations,thus predisposingone's perception,memory, orresponse.conditionedresponse(CR)in classicalconditioning, alearned response toa previously neutral(but now conditioned)stimulus (CS). (MyersPsychology for AP 3ep. 274)generalizationthe tendency, once aresponse has beenconditioned, for stimulisimilar to the conditionedstimulus to elicit similarresponses. (In operantconditioning, generalizationoccurs when responseslearned in one situationoccur in other, similarsituCarlWernickean area of the brain (inthe left temporal lobe)involved in languagecomprehension andexpression was namedfor him because hediscovered itheritabilitythe proportion ofvariation amongindividuals that we canattribute to genes. Theheritability of a traitmay vary, dependingon the range ofpopulations andenvironments studied.motorcortexan area at therear of thefrontal lobesthat controlsvoluntarymovements.acquisitionin classical conditioning theinitial stage, when one linksa neutral stimulus and anunconditioned stimulus sothat the neutral stimulusbegins triggering theconditioned response. Inoperant conditioning, thestrengthening of areinforced respobehaviorgeneticsthe study of therelative power andlimits of geneticand environmentalinfluences onbehavior.glialcells(glia)cells in the nervoussystem that support,nourish, and protectneurons; they mayalso play a role inlearning and thinking.conditionedstimulus(CS)in classical conditioning, anoriginally neutral stimulusthat, after association withan unconditioned stimulus(US), comes to trigger aconditioned response (CR).(Myers Psychology for AP3e p. 274)peripheralnervoussystem(PNS)the sensory andmotor neurons thatconnect thecentral nervoussystem (CNS) tothe rest of thebody.

AP PSYCH- Units 3, 4 & 5 - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. in classical conditioning, an unlearned, naturally occurring response (such as salivation) to an unconditioned stimulus (US) (such as food in the mouth). (Myers Psychology for AP 3e p. 274)
    unconditioned response (UR)
  2. the chamber between the eardrum and cochlea containing three tiny bones (hammer, anvil, and stirrup) that concentrate the vibrations of the eardrum on the cochlea's oval window.
    middle ear
  3. failing to see visible objects when our attention is directed elsewhere
    inattentional blindness
  4. the number of complete wavelengths that pass a point in a given time (for example, per second).
    frequency
  5. the adjustable opening in the center of the eye through which light enters.
    pupil
  6. the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.
    perception
  7. a depth cue, such as retinal disparity, that depends on the use of two eyes.
    binocular cue
  8. perceiving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.
    color constancy
  9. the body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous systems.
    nervous system
  10. the brain's sensory control center, located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla
    thalamus
  11. in operant conditioning, any event that strengthens the behavior it follows. (Myers Psychology for AP 3e p. 284)
    reinforcement
  12. the theory that opposing retinal processes (red-green, blue-yellow, white-black) enable color vision. For example, some cells are stimulated by green and inhibited by red; others are stimulated by red and inhibited by green.
    opponent-process theory
  13. a neurotransmitter's reabsorption by the sending neuron.
    reuptake
  14. chemical messengers that cross the synaptic gaps between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether that neuron will ge
    neurotransmitters
  15. failing to notice changes in the environment; a form of inattentional blindness.
    change blindness
  16. analysis that begins with the sensory receptors and works up to the brain's integration of sensory information.
    bottom-up processing
  17. a molecule that, by binding to a receptor site, inhibits or blocks a response.
    antagonist
  18. increasing behaviors by stopping or reducing aversive stimuli. A negative reinforcer is any stimulus that, when removed after a response, strengthens the response. (Note: Negative reinforcement is not punishment.) (Myers Psychology for AP 3e p.
    negative reinforcement
  19. in classical conditioning, a stimulus that elicits no response before conditioning. (Myers Psychology for AP 3e p. 273)
    neutral stimulus (NS)
  20. like Gazzaniga, studied split brain patients; showed that left/right hemispheres have different functions
    Roger Sperry
  21. an innately reinforcing stimulus, such as one that satisfies a biological need. (Myers Psychology for AP 3e p. 286)
    primary reinforcer
  22. a simple, automatic response to a sensory stimulus, such as the knee-jerk response.
    reflex
  23. a theory predicting how and when we detect the presence of a faint stimulus (signal) amid background stimulation (noise). Assumes there is no single absolute threshold and that detection depends partly on a person's experience, expectations, moti
    signal detection theory
  24. a nerve cell; the basic building block of the nervous system.
    neuron
  25. area at the front of the parietal lobes that registers and processes body touch and movement sensations.
    somatosensory cortex
  26. the theory that the spinal cord contains a neurological "gate" that blocks pain signals or allows them to pass on to the brain. The "gate" is opened by the activity of pain signals traveling up small nerve fibers and is closed by activity in larg
    gate-control theory
  27. split-brain research; understanding of functional lateralization in the brain; how the cerebral hemispheres communicate
    Michael Gazzaniga
  28. the brain's ability to change, especially during childhood, by reorganizing after damage or by building new pathways based on experience.
    plasticity
  29. our sense of body movement and position that enables our sense of balance.
    vestibular sense
  30. a sudden realization of a problem's solution; contrasts with strategy-based solutions. (Myers Psychology for AP 3e pp. 304, 370)
    insight
  31. the theory that the retina contains three different types of color receptors—one most sensitive to red, one to green, one to blue—which, when stimulated in combination, can produce the perception of any color
    Young-Helmholtz trichromatic (three-color) theory
  32. the intricate fabric of interconnected neural cells covering the cerebral hemispheres; the body's ultimate control and information-processing center.
    cerebral cortex
  33. the amount of energy in a light wave or sound wave, which influences what we perceive as brightness or loudness. Intensity is determined by the wave's amplitude (height).
    intensity
  34. two lima-bean-sized neural clusters in the limbic system; linked to emotion.
    amygdala
  35. diminished sensitivity as a consequence of constant stimulation.
    sensory adaptation
  36. bundled axons that form neural "cables" connecting the central nervous system with muscles, glands, and sense organs.
    nerves
  37. nerve cells in the brain's visual cortex that respond to specific features of the stimulus, such as shape, angle, or movement.
    feature detectors
  38. an operant conditioning procedure in which reinforcers guide behavior toward closer and closer approximations of the desired behavior. (Myers Psychology for AP 3e p. 284)
    shaping
  39. an organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes.
    gestalt
  40. frontal lobe neurons that some scientists believe fire when we perform certain actions or observe another doing so. The brain's mirroring of another's action may enable imitation and empathy. (Myers Psychology for AP 3e p. 313)
    mirror neurons
  41. the oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull; the brainstem is responsible for automatic survival functions
    brainstem
  42. retinal receptors that are concentrated near the center of the retina and that function in daylight or in well-lit conditions. Cones detect fine detail and give rise to color sensations.
    cones
  43. Thorndike's principle that behaviors followed by favorable consequences become more likely, and that behaviors followed by unfavorable consequences become less likely. (Myers Psychology for AP 3e p. 283)
    law of effect
  44. in operant conditioning, a reinforcement schedule that reinforces a response after an unpredictable number of responses. (Myers Psychology for AP 3e p. 288)
    variable-ratio schedule
  45. perceiving objects as unchanging (having consistent color, brightness, shape, and size) even as illumination and retinal images change.
    perceptual constancy
  46. the central focal point in the retina, around which the eye's cones cluster.
    fovea
  47. the focusing of conscious awareness on a particular stimulus
    selective attention
  48. the process of observing and imitating a specific behavior. (Myers Psychology for AP 3e p. 312)
    modeling
  49. a molecule that, by binding to a receptor site, stimulates a response
    agonist
  50. chemical messengers that are manufactured by the endocrine glands, travel through the bloodstream, and affect other tissues.
    hormones
  51. the diminishing of a conditioned response; occurs in classical conditioning when an unconditioned stimulus (US) does not follow a conditioned stimulus (CS); occurs in operant conditioning when a response is no longer reinforced. (Myers Psychology
    extinction
  52. the light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information.
    retina
  53. learning by observing others. (Also called social learning.) (Myers Psychology for AP 3e p. 312)
    observational learning
  54. the innermost part of the ear, containing the cochlea, semicircular canals, and vestibular sacs.
    inner ear
  55. the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this junction is called the synaptic gap or synaptic cleft.
    synapse
  56. a coiled, bony, fluid-filled tube in the inner ear; sound waves traveling through the cochlear fluid trigger nerve impulses.
    cochlea
  57. the acquisition of mental information, whether by observing events, by watching others, or through language. (Myers Psychology for AP 3e p. 272)
    cognitive learning
  58. in operant conditioning, a reinforcement schedule that reinforces a response only after a specified number of responses. (Myers Psychology for AP 3e p. 288)
    fixed-ratio schedule
  59. the principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount).
    Weber's law
  60. the reappearance, after a pause, of an extinguished conditioned response. (Myers Psychology for AP 3e p. 276)
    spontaneous recovery
  61. decreasing responsiveness with repeated exposure to a stimulus. (Myers Psychology for AP 3e pp. 271, 491)
    habituation
  62. the dimension of color that is determined by the wavelength of light; what we know as the color names blue, green, and so forth.
    hue
  63. a neuron's bushy, branching extensions that receive messages and conduct impulses toward the cell body.
    dendrites
  64. reinforcing the desired response every time it occurs. (Myers Psychology for AP 3e p. 287)
    continuous reinforcement schedule
  65. the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations.
    sympathetic nervous system
  66. Russian physiologist; discovered classical conditioning; trained dogs to salivate at the ringing of a bell
    Ivan Pavlov
  67. a neural structure lying below (hypo) the thalamus; it directs several maintenance activities (eating, drinking, body temperature), helps govern the endocrine system via the pituitary gland, and is linked to emotion and reward.
    hypothalamus
  68. the large band of neural fibers connecting the two brain hemispheres and carrying messages between them.
    corpus callosum
  69. portion of the cerebral cortex lying roughly above the ears; includes the auditory areas, each receiving information primarily from the opposite ear.
    temporal lobes
  70. the brain and spinal cord.
    central nervous system (CNS)
  71. behaviorism; emphasis on external behaviors of people and their reactions on a given situation; famous for Little Albert study in which baby was taught to fear a white rat
    John B. Watson
  72. an amplified recording of the waves of electrical activity sweeping across the brain's surface. These waves are measured by electrodes placed on the scalp.
    electroencephalogram (EEG)
  73. a less common form of hearing loss, caused by damage to the mechanical system that conducts sound waves to the cochlea.
    conduction hearing loss
  74. a technique for revealing bloodflow and, therefore, brain activity by comparing successive MRI scans. fMRI scans show brain function as well as its structure.
    fMRI (functional MRI)
  75. cognitive psychologist; latent learning and cognitive map
    Edward Tolman
  76. hearing loss caused by damage to the cochlea's receptor cells or to the auditory nerves; the most common form of hearing loss, also called nerve deafness.
    sensorineural hearing loss
  77. the formation of new neurons.
    neurogenesis
  78. a period of inactivity after a neuron has fired.
    refractory period
  79. the transparent structure behind the pupil that changes shape to help focus images on the retina.
    lens
  80. the nerve that carries neural impulses from the eye to the brain.
    optic nerve
  81. the sense of smell.
    olfaction
  82. the distance from the peak of one light or sound wave to the peak of the next. Electromagnetic wavelengths vary from the short blips of gamma rays to the long pulses of radio transmission. (Myers Psychology for AP 3e p. 177)
    wavelength
  83. "morphine within"—natural, opiate-like neurotransmitters linked to pain control and to pleasure.
    endorphins
  84. a technique that uses magnetic fields and radio waves to produce computer -generated images of soft tissue. MRI scans show brain anatomy.
    MRI (magnetic resonance imaging)
  85. an illusion of movement created when two or more adjacent lights blink on and off in quick succession
    phi phenomenon
  86. below one's absolute threshold for conscious awareness
    subliminal
  87. a type of learning in which we link two or more stimuli; as a result, to illustrate with Pavlov's classic experiment, the first stimulus (a tone) comes to elicit behavior (drooling) in anticipation of the second stimulus (food). (Myers Psychology
    classical conditioning
  88. a mental predisposition to perceive one thing and not another.
    perceptual set
  89. the principle that information is often simultaneously processed on separate conscious and unconscious tracks
    dual processing
  90. the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment.
    sensation
  91. in operant conditioning, a reinforcement schedule that reinforces a response at unpredictable time intervals. (Myers Psychology for AP 3e p. 288)
    variable-interval schedule
  92. a pair of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress.
    adrenal glands
  93. a binocular cue for perceiving depth. By comparing retinal images from the two eyes, the brain computes distance—the greater the disparity (difference) between the two images, the closer the object
    retinal disparity
  94. monocular depth cues in which objects closer to us seem to move at a faster pace than those that are farther away,
    motion parallax
  95. scan a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task.
    PET (positron emission tomography)
  96. tissue destruction. A brain lesion is a naturally or experimentally caused destruction of brain tissue.
    lesion
  97. scan a series of X-ray photographs taken from different angles and combined by computer into a composite representation of a slice of the brain's structure.
    CT (computed tomography)
  98. researcher famous for work in observational or social learning including the famous Bobo doll experiment
    Albert Bandura
  99. the division of the peripheral nervous system that controls the body's skeletal muscles. (Also called the skeletal nervous system.)
    somatic nervous system
  100. Pioneer in operant conditioning who discovered concepts in instrumental learning such as the law of effect. Known for his work with cats in puzzle boxes.
    Edward Thorndike
  101. the minimum difference between two stimuli required for detection 50 percent of the time. We experience the difference threshold as a just noticeable difference (or jnd).
    difference threshold
  102. the neuron extension that passes messages through its branches to other neurons or to muscles or glands.
    axon
  103. our awareness of ourselves and our environment.
    consciousness
  104. the base of the brainstem; controls heart-beat and breathing.
    medulla
  105. neurons that carry outgoing information from the brain and spinal cord to the muscles and glands.
    motor (efferent) neurons
  106. a ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening.
    iris
  107. the endocrine system's most influential gland. Under the influence of the hypothalamus, the pituitary regulates growth and controls other endocrine glands.
    pituitary gland
  108. neurons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs.
    interneurons
  109. in hearing, the theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone, thus enabling us to sense its pitch. (Also called temporal theory.)
    frequency theory
  110. retinal receptors that detect black, white, and gray, and are sensitive to movement; necessary for peripheral and twilight vision, when cones don't respond.
    rods
  111. neurons that carry incoming information from the sensory receptors to the brain and spinal cord
    sensory (afferent) neurons
  112. Behaviorist that developed the theory of operant conditioning by training pigeons and rats
    B.F. Skinner
  113. the division of the autonomic nervous system that calms the body, conserving its energy
    parasympathetic nervous system
  114. the hopelessness and passive resignation an animal or person learns when unable to avoid repeated aversive events. (Myers Psychology for AP 3e p. 307)
    learned helplessness
  115. a stimulus that gains its reinforcing power through its association with a primary reinforcer
    secondary (conditioned) reinforcer
  116. a tone's experienced highness or lowness; depends on frequency.
    pitch
  117. information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations.
    top-down processing
  118. portion of the cerebral cortex lying at the top of the head and toward the rear; receives sensory input for touch and body position.
    parietal lobes
  119. a fatty tissue layer segmentally encasing the axons of some neurons; enables vastly greater transmission speed as neural impulses hop from one node to the next.
    myelin sheath
  120. the processing of many aspects of a problem simultaneously
    parrallel processing
  121. the ability to see objects in three dimensions although the images that strike the retina are two-dimensional; allows us to judge distance.
    depth perception
  122. reinforcing a response only part of the time; results in slower acquisition of a response but much greater resistance to extinction than does continuous reinforcement. (Myers Psychology for AP 3e p. 287)
    partial (intermittent) reinforcement schedule
  123. in classical conditioning, a stimulus that unconditionally—naturally and automatically—triggers an unconditioned response UR). (Myers Psychology for AP 3e p. 274)
    unconditioned stimulus (US)
  124. the level of stimulation required to trigger a neural impulse.
    threshold
  125. areas of the cerebral cortex that are not involved in primary motor or sensory functions; rather, they are involved in higher mental functions such as learning, remembering, thinking, and speaking.
    association areas
  126. our movement sense—our system for sensing the position and movement of individual body arts.
    kinesthesia
  127. the eye's clear, protective outer layer, covering the pupil and iris.
    cornea
  128. in hearing, the theory that links the pitch we hear with the place where the cochlea's membrane is stimulated.
    place theory
  129. neural system (including the hippocampus, amygdala, and hypothalamus) located below the cerebral hemispheres; associated with emotions and drives.
    limbic system
  130. a neural impulse; a brief electrical charge that travels down an axon.
    action potential
  131. portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgments.
    frontal lobes
  132. (1) in classical conditioning, the learned ability to distinguish between a conditioned stimulus and similar stimuli that do not signal an unconditioned stimulus. (In operant conditioning, the ability to distinguish responses that are reinforced
    discrimination
  133. discovered area in the brain (named for him) in the left frontal lobe responsible for language production
    Paul Broca
  134. a depth cue, such as interposition or linear perspective, available to either eye alone.
    monocular cue
  135. sensory nerve endings that respond to stimuli.
    sensory receptors
  136. the "little brain" at the rear of the brainstem; functions include processing sensory input, coordinating movement output and balance, and enabling nonverbal learning and memory.
    cerebellum
  137. portion of the cerebral cortex lying at the back of the head; includes areas that receive information from the visual fields.
    occipital lobes
  138. conversion of one form of energy into another. In sensation, the transforming of stimulus energies, such as sights, sounds, and smells, into neural impulses our brain can interpret.
    transduction
  139. the part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms.
    autonomic nervous system (ANS)
  140. in operant conditioning, a reinforcement schedule that reinforces a response only after a specified time has elapsed. (Myers Psychology for AP 3e p. 288)
    fixed-interval schedule
  141. a type of learning in which a behavior becomes more likely to recur if followed by a reinforcer or less likely to recur if followed by a punisher. (Myers Psychology for AP 3e p. 283)
    operant conditioning
  142. the body's "slow" chemical communication system; a set of glands that secrete hormones into the bloodstream.
    endocrine system
  143. a nerve network that travels through the brainstem and thalamus and plays an important role in controlling arousal.
    reticular formation
  144. a condition resulting from surgery that isolates the brain's two hemispheres by cutting the fibers (mainly those of the corpus callosum) connecting them.
    split brain
  145. learning that occurs but is not apparent until there is an incentive to demonstrate it. (Myers Psychology for AP 3e p. 304)
    latent learning
  146. increasing behaviors by presenting positive reinforcers. A positive reinforcer is any stimulus that, when presented after a response, strengthens the response. (Myers Psychology for AP 3e p. 285)
    positive reinforcement
  147. an event that tends to decrease the behavior that it follows. (Myers Psychology for AP 3e p. 289)
    punishment
  148. the organization of the visual field into objects (the figures) that stand out from their surroundings (the ground).
    figure-ground
  149. a mental representation of the layout of one's environment. For example, after exploring a maze, rats act as if they have learned a cognitive map of it. (Myers Psychology for AP 3e p. 304)
    cognitive map
  150. the point at which the optic nerve leaves the eye, creating a "blind" spot because no receptor cells are located there.
    blind spot
  151. a neuron's reaction of either firing (with a full-strength response) or not firing.
    all-or-none response
  152. a procedure in which the conditioned stimulus in one conditioning experience is paired with a new neutral stimulus, creating a second (often weaker) conditioned stimulus. For example, an animal that has learned that a tone predicts food might the
    higher-order conditioning
  153. the sense or act of hearing.
    audition
  154. the activation, often unconsciously, of certain associations, thus predisposing one's perception, memory, or response.
    priming
  155. in classical conditioning, a learned response to a previously neutral (but now conditioned) stimulus (CS). (Myers Psychology for AP 3e p. 274)
    conditioned response (CR)
  156. the tendency, once a response has been conditioned, for stimuli similar to the conditioned stimulus to elicit similar responses. (In operant conditioning, generalization occurs when responses learned in one situation occur in other, similar situ
    generalization
  157. an area of the brain (in the left temporal lobe) involved in language comprehension and expression was named for him because he discovered it
    Carl Wernicke
  158. the proportion of variation among individuals that we can attribute to genes. The heritability of a trait may vary, depending on the range of populations and environments studied.
    heritability
  159. an area at the rear of the frontal lobes that controls voluntary movements.
    motor cortex
  160. in classical conditioning the initial stage, when one links a neutral stimulus and an unconditioned stimulus so that the neutral stimulus begins triggering the conditioned response. In operant conditioning, the strengthening of a reinforced respo
    acquisition
  161. the study of the relative power and limits of genetic and environmental influences on behavior.
    behavior genetics
  162. cells in the nervous system that support, nourish, and protect neurons; they may also play a role in learning and thinking.
    glial cells (glia)
  163. in classical conditioning, an originally neutral stimulus that, after association with an unconditioned stimulus (US), comes to trigger a conditioned response (CR). (Myers Psychology for AP 3e p. 274)
    conditioned stimulus (CS)
  164. the sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body.
    peripheral nervous system (PNS)