PSYB65H3 Lecture Notes - Lecture 1: Agnosia, Depth Perception, Two-Streams Hypothesis
5 Jan 2015
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Document Summary
If we were to lose all cort. function, vision would be last to be chosen. Calcrine sulcus: primary vision takes place (v1 lining along it"s banks) Concious perception of the raw aspects of vision (v1); laminar org. Striped or layered appearance and so for this reason is also known as the striate cortex. *(v4) higher the number the further removed it is from raw processing of original sens. info. Eyes optic nerves/chaism/tract lgn v1 all oth. areas of vis. syst. Forms of apraxia with brain damage disrupting dorsal stream e. g. problems reaching/catching. Moving in reaction to environment using vis. input disrupted. Looking and assoc. w/ mem. or labour (object perception) *lesion beyond v1 in occip. lobe specific deficits. *perfect test to id locat. in brain respons. for function: double dissoc. Monocular blindness: depth perception would be severely affected. Nasal hemianopia isn"t that rare b/c circle of willis anneurysims/strokes can prod. deficits here.
