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PSYC 2390 (191)
Lecture

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Department
Psychology
Course
PSYC 2390
Professor
Naseem Al- Aidroos
Semester
Fall

Description
PerceptionReviewChapter1PerceptionismentalrepresentationfromsensesprocessingstimuliinenvironmenttoguideactionsothatwecanliveandprocreateCircleofperceptualprocessSTIMULUSenvironmentalstimulusstimulusexistsattendedstimulusstimulusfocusonstimulusonreceptorimageonretinaELECTRICITYtransductiontransformationofoneformofenergytoanothersopatternoflightofstimulusonreceptortransducedtoelectricalsignalsinvisualreceptorstransmissionsendtootherneuronsneuralprocessinginteractionbetweenneuronsmentalrepresentationEXPERIENCEANDACTIONperceptionconsioussensoryexperienceelectricalsignaltransformedbybrainintoexperienceofseeingrecognitioncategorizeprobleminvisualformagnosiabutstillperceiveActiontocatchpreyorreproducebasedonperceptionKNOWLEDGEwildcardcaninterveneanywhereinfoaperceiverbringstoasituationtopdownprocessingakaknowledgebaseprocessingwhichcausecognitiveinfluencesonperceptionandcaneffectphysiologyaswellotherwisetheperceptionisknownasbottomupprocessingSooftenbottomupprocessingisthestartandthentopdownhelpsclarifyPsychophysicalApproachtoperceptionpsychophysicsquantitativemethodstomeasurerelationshipsbetweenstimuliandperceptionalthoughwewillusepsychophysicstomeananymeasurementoftherelationshippbetweenstimuliandperceptionakaPPPhysiologocialapproachtoperceptionmeasuringrelationshipbetweenphysiologicalprocessesandstimuliPH1andbetweenphysandperceptionPH2studiedbymeasuringelectricalresponsesinthenervoussystemorthroughchemicaloranatomicalprocessesPH1wouldbemeasuringelectricalactivitiescausedbydifferentcoloredlightsinneuronswhilePH2wouldbeifyoumeasuredbrainactivitywhilesomeoneexplainsperceptionofcolorStilltheultimategoalistounderstandhowwecreateperceptionsFechnerdemonstratedmentalactivitycouldbemeasuredquantitativelyandstillusedtodayforhearingandglassestestsMeasuringPerceptualresponsestostimuliincludedescribingphenomenologicalmethodasksubjecttodescriberecognizingasksubjecttoidentifystimulusdetectingmoresubtlethanrecognizingclassicalpsychophysicalmethodsbasedonabsolutethresholdsmallestamountstimulusnecessaryMethodoflimitspresentstimulialternatingascendingordescendingsubjectchangefromyestonocrossoverpointandthethresholdisthemeanofCPsmethodofadjustmentfastestadjustsstimulusuntilobservercanjustbarelydetectstimuluswhichistheabsolutethresholdcanrepeatandaveragemethodofconstantstimuli595
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