Thepupilandcontrols thesizeofthepupilopening

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Unformatted text preview: ftheeye         lens thetransparentstructurebehindthepupil thatchangesshapetohelpfocusimageson theretina 7 9/6/2012 Thestructuresoftheeye         accommodation lenschangesshapetofocusnear orfarobjects Thestructuresoftheeye         Thestructuresoftheeye  retina        thelight ­sensitiveinnersurfaceoftheeye, containingthereceptorsrodsandconesplus layersofneuronsthatbegintheprocessingof visualinformation 8 9/6/2012 Thestructuresoftheeye         photoreceptors bipolar ganglion Thestructuresoftheeye         Thestructuresoftheeye         rods cones photoreceptorsthatdetectblackwhite,andgray; necessaryforperipheralandtwilightvision,when  photoreceptorsthatareconcentratednearthe centeroftheretinaandthatfunctionindaylightor inwell ­litconditions.Theydetectfinedetail 9 9/6/2012 Thestructuresoftheeye  fovea  thecentralfocalpointintheretina,around        Thestructuresoftheeye   lightbreakdown photopigments       transduction processbywhichaperceptualsystem convertsstimuliintoelectricalimpulses Thestructuresoftheeye         opticnerve thenervethatcarriesneuralimpulses fromtheeyetothebrain 10 9/6/2012 Thestructuresoftheeye   color motion form depth   opticnerve thenervethatcarriesneuralimpulses fromtheeyetothebrain Principlesofperception whenthebraininterpretssensoryinformationitmakesmany assumptions Perception alwaysanopinion Principlesofperception  processesof perceptual organization processesthatputsensory informationtogethertogiveyouthe perceptionofcoherence 11 9/6/2012 Attention:Didyounoticethat? selective attention theprocessbywhichweattend meaningfulstimuliandfilterout irrelevantorextraneousstimuli Perceptualset:Seeingwhatyouexpecttosee  perceptualset thetendencyforperceptionstobe preconceptions Perceptualset:Seeingwhatyouexpecttosee      top ­down processing theuseofpreexistingknowledgeto organizeindividualfeaturesintoa unifiedwhole 12 9/6/2012 Perceptualset:Seeingwhatyouexpecttosee      bottom ­up processing theanalysisofthesmallerfeatures tobuilduptoacomplete perception Gestaltlawsoforganization whengivenaclusterofsensations,  peopletendtoorganizethemintoa gestalt   Gestaltpsychology focusesontheabilityto perceiveoverallpatterns Gestaltlawsoforganization  figureand ground Weorganizetheworldso somep...
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