最新Sensation & Perception：感觉与知觉教学讲义PPT课件.ppt

《最新Sensation & Perception：感觉与知觉教学讲义PPT课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Sensation&Perception：感觉与知觉Sensation&PerceptionSensation–detectionofbasicsensoryexperiencesSounds,touch,smellsPerception–interpretationofsensationsinmeaningfulwaysInterpretingsoundsasmusic,touchasthecatrubbingagainstyou,smellsasdinnercookingSensation&PerceptionSensoryreceptors–specializ

2、edcellsuniquetoeachsenseorganTheyrespondtoaparticularformofsensorystimulationTransduction–theprocessofconvertingdifferentformsofenergyintoelectricalimpulsesthataretransmittedvianeuronstothebrainDonebythesensoryreceptorsPartsoftheEyeLens–structurelocatedbehindthepupilthatfocuseslightent

3、eringtheeyeAccommodation–processbywhichthelenschangesshapetofocusincominglightontheretinaProblemswiththeshapeoftheeyeball=eithernearsightedness(long,thineyeball)orfarsightedness(short,fateyeball)Retina–membranelocatedinthebackoftheeyecontainingthesensoryreceptorsforvisionRods–receptors

4、oftheeyethatarehighlysensitivetolight,butnotcolor;responsibleforperipheral&nightvisionCones–pointedsensoryreceptorsoftheeyethatdetectcolorvisionandfinedetailsMostconesareconcentratedonthefovea(inthecenteroftheretina)VisualProcessingintheRetinaBipolarcells–specializedneuronsintheretinat

5、hatconnectwiththerods&conesandtheganglioncellsGanglioncells–specializedneuronsintheretinathatconnecttothebipolarcells;axonsofthesecellsmakeuptheopticnerveEachganglioncellcombines,analyzes,andencodesinformationfromtherods&conesbeforesendinginfotothebrainFromtheEyetotheBrainOpticnerve–ex

6、itsfromthebackoftheeyeandcarriesinformationtothevisualcortexofthebrainMadeupofamillionaxonsofganglioncellsOpticchiasm–wheretheopticnervefibersfromeacheyemeetandpartlycrossovertotheoppositesideofthebrainThalamus–wheremostoftheopticnerveaxonsgo;processesinformationaboutform,color,brightn

7、ess,anddepthVisualcortex–informationfromthecortexgoeshere,whereitisdecodedandinterpretedColorTheperceptualexperienceofdifferentwavelengthsoflightHue–color;differentwavelengthsWeseecolorsfrom400nanometers(violet)to700nanometers(red)Whiteobject–reflectingallcolors;blackobject–absorbsal