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
