types of visual agnosia lgn of thalamus retina occipital cortex surrounding visual cortex mesial...
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Types of Visual Agnosia
LGN ofThalamus
Retina
OccipitalCortex
SurroundingVisual Cortex
MesialTemporalSubcortex
Inabilityto accessmemory
associativeagnosia
Inabilityto integrate
Featuresapperceptive Agnosia or
simultagnosia
Recognition
Top DownPerceptualProcessing
Bottom upPerceptualProcessing
Lexical recognition disorders
dog
Motor Planning
/dawg/
/ahg/
dog
/d/
og
d
Decision stage
/dawg/ /d/ /ahg/
d og
c
e
a
b
d
d
Deep dyslexia: c,(e)Alexia: a,c,(e)Agraphia: dWord deafness: b
Summary Comparison between representation of
perceptual input and representations in memory Redundant pathways increase probability of match
Response includes multiple associated representations Priming, agnosia, and apraxia provide evidence of
specific pathways and associations Selection of context-appropriate
representation occurs in working memory Orients you to place
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