PSYC 1101 Lecture 6: 6_SensationPerception

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7 Feb 2017
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MoreBrainParts
CerebralCortex,limbicsystem,brainstem,cerebellum
Notmuch‘psychology’inthebrainstemandcerebellum:temp.Regulation,
arousalregulation,breathing,balance
Forebrain:cortex+limbicsystem
Whereyouhavesensationandperceptionandemotionand
memoryandrationalityandlanguageandpersonalityand
humour
Functionsaremoreorlesslocalized
LimbicSystem
Theamygdalaconsistof2lima-beansizedneuralclusterslinkedtothe
emotionsoffearandanger.
Typesofsmiles:realsmile,limbicsmile,Duchennesmile,socialsmile
Smilingbroadlymakespeoplethinkyoureyesarecontractingandthat
you’rehappier.
1. Eyecoverfoldmovesdownward
2. Endofeyebrowsdipslightly
Sensation&Perception
Somebasicdefinitions
Sensation
Theprocessesbywhichoursensoryreceptorsandnervous
systemreceiveandrepresentstimulusenergy
Perception
Theprocessesoforganizingandinterpretingsensory
information,enablingustorecognizemeaningfulobjectsand
events
Sensorysystem:11,000,000bits/sec
Amountofinfowecanhandle:16-50bits/sec
Sensationisbottomupprocessing
Analysisofthestimulusbeginswiththesensereceptorsandworksup
tothelevelofthemindandthebrain.
Letter‘A’isreallyablackblotchbrokendownintofeaturesbythe
brainthatweperceiveasan‘A’(threeblacklines).
Perceptionistopdownprocessing
Informationprocessingguidedbyhigher-levelmentalprocessesaswe
constructperceptions,drawingonourexperienceandexpectations.
Sensations:makingsenseofcomplexity
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