Sensation and PerceptionForenergy to be detected has to exceed sensoryiiithresholdAbsolutethreshold smallestpossiblestrengthof stimulusthat can bedetected half the timesensoryThresholds Difference threshold smallest possibledifferencebetween2 stimuli that can bedetected half the timeSensory adaptation thedecline in sensativity to aconstant stimuliTransduction Energy is converted into neural signals andtransmitted to the brainSubliminalperception deduction of stimuli that are belowthresholdon concious awareness nonconsciousperceptionMereexposureeffectfinding that repeated exposuretostimulus increases personsprefrence for that stimulusV15Oh stimulus lightwaves PartsofEyecorneagathersincominglightPupil contracts or dialates tocontrolamountof lightenteringeyeDimlightLensprocess of accomidationfocuseslighton retinaRods peripheral V'spenna containssensoryreceptorsBlack WhitevisionBrightlightcones concentrated in Foresman area inpupilFine details visual acuityColor vision Pychological experience of different wavelengthsHuelightwavelengthI 939 194 5purityofwavelengthamplitude oflightwaveTrichromatic Theory that sensationofcolorresultsbecones in retina areTheory especiallysensitive to redlight longwaves greenlight medandbluewaves short explainsred greencolorbliness Opg nytTheory thatcolor isproductofopposingpairsofcolorreceptorsandprocess whenonemember of a colorpairis stimulated theothermemberis inhibitedI II eexplains after imagesBlue yellow occurs in ganglion cellsPerception Theprocess ofintegratingorganizing interpretingsensoryinfoTop down knowledgeflowsfromthebraindown to thesensory dataprocessing expectationsBottom up Dataflowfromsensoryreceptors up to the brainTprosessingGestalt emphasizedperception of wholeforms or gestaltsPsychology Figure ground relationship perception is automaticallyseparatedintofigurewhichclearlystandsout fromlessdistinct background thegroundNaturalrulesfororganizing Proximity hear belong law of proximityData Similarity similar belong lawofsimilarityContinuity flow continuos lawofgoodcontinuationclosure completinganimage lawofclosureDepthPerception MonocularCues Distanceordepthcues that can beprocessedbyeithereye aloneRelative sizeoverlapAriel perspectiveRetinalDisparity Deference inLinear perspectivesua data detectedbytheleft and RighteyePerceptualPrm Pals Perceptualconstancy objects are perciered as stabledespitechanges insensoryoutputSizeconstancy perception ofobjectas same sizeI shapeconstancycolorconstancy Perceptualillusions MullerLyerillusion visualillusioninvolvingmisperceptionoflengthof 2 Identical lines one w arrows pointedinwardand one wi arrows pointedoutwardMoon illusion visual illusioninvolving misperception that themoon is largerwhen on horizon than when overheadMotionperceptionInducedmotionstroboscopicmotionPerception is influencedbyexperiencePerceptual set tendency topercheve objects or situationsfrom aparticularframe of reference
