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Flashcards in disorders of object recognition Deck (8)
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1

Name 4 reasons people might not be able to recognise an object

sensory deficit (eye problem)
knowledge deficit (alzheimers)
language deficit (aphasia)
unable to percieve AGNOSIA

2

What is visual agnosia

able to draw from memory, define something, identify by touch BUT cant recognise object

3

what is optic ataxia

patients have trouble reaching for an object, adjusting their grasp

4

visual agnosia and optic ataxia arise from problems where..

VA = vent stream to inf temporal lobe
OA = dorsal stream projecting to parietal lobe

5

Describe apperceptive agnosia

DF cant put edges of the object together / work out whats background or shadows. cant fill in fragments of pictures or cant see pics if they overlap

edge grouping, feature binding, view normalisation

6

describe associative agnosia

GS can see the whole form of the shape but cant recognise the object - can copy objects down etc but cant name them

failure to access semantic representation

7

Which one has unconscious awareness of action and what is it?

GS given a picture of a lock, he cant name it but subconsciously twirls his fingers in the motion of unlocking a lock

8

associative and apperceptive which is which patient

GS - associative
DF - apperceptive