PSYC 100 Lecture Notes - Lecture 19: Amygdala, Retina, Agnosia

• School: McGill University
• Department: Psychology
• Course: PSYC 100
• Professor: Daniel Levitin

Document Summary

Neurones+ in+ different+ parts+ of+ the+ brain+ tend+ to+ have+ different+ types+ of+ receptor+ fields. + these+ areas+appear+to+process+specific+aspects+of+visual+stimulus+(color+and+motion). + D. f. + had+ object+ agnosia,+ the+ inability+ to+ recognize+ objects. + her+ conscious+ visual+ perception+ of+ objects+was+impaired. + A+ series+ of+ laws+ explain+ how+ we+ perceive+ features+ of+ a+ visual+ scene+ are+ grouped+ in+ organized+ wholes. +our+brain+uses+innate+principles+to+organize+sensory+information. + Proximity:+ the+ closer+ objects+ are,+ the+ more+ likely+ we+ are+ to+ group+ them+ and+ view+ them+ as+ the+ same+object. + Good+ continuation:+ tendency+ to+ interpret+ intersecting+ lines+ as+ continuous+ rather+ than+ as+ changing+directions+radically. +good+contour+continuation+appears+to+play+a+role+in+completing+an+ object+behind+an+occluder,+anything+that+hides+a+portion+of+an+object+from+the+view. + Reversible+ figure+ illusion+ (face+ vs. + background). + nisbett+ (2001)+ found+ that+ easterners+ are+ more+ likely+to+be+influenced+by+the+background+of+a+figure,+whereas+westerners+will+more+likely+extract+ the+figure+from+its+background. +memories+of+a+particular+shape+can+inform+shape+processing. Bottomgup:+ a+ hierarchical+ model+ of+ pattern+ recognition+ in+ which+ data+ are+ relayed+ from+ one+ processing+level+to+the+next,+always+moving+to+a+higher+level+of+processing. ++ Topgdown:+ a+ hierarchical+ model+ of+ pattern+ recognition+ in+ which+ information+ at+ higher+ levels+ of+ processing+ can+ also+ influence+ lower,+ earlier+ levels+ in+ the+ process,+ which+ is+ why+ context+ affects+ perception. +