Ch. 1- vision Flashcards

(5 cards)

1
Q

what are the types of photoreceptors

A

rods- light and dark
cones- colour
ganglion cells- blue light wavelengths

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2
Q

what is the ventral stream for and where does it go (in brain)

A

what stream, what something is
occipital lobe to temporal lobe

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3
Q

what are two types of examples of damage to the ventral stream

A

Apperceptive visual agnosia- impaired object recognition
Associative visual agnosia- impaired object identification

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4
Q

what is the dorsal stream for and where does it go

A

where stream, where something is
occipital lobe to parietal lobe

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5
Q

what are 4 examples of damage to the dorsal stream

A

Optic ataxia- cant use visuospatial info to guide movements
Hemispatial/contralateral neglect- unaware of the contra lesional half of space
Akinetopsia- cannot perceive motion
Apraxia- inability to produce voluntary movements in the absence of muscular disorders

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