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Cards In This Set
| Front | Back |
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What divides the occipital lobe from the temporal and parietal lobe?
(describe occipital lobe anatomy) |
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Lingual gyrus houses
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V2 and VP
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Fusiform gyrus houses
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V4
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Calcarine sulcus
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 -contains much of V1 -separates upper and lower visual fields |
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Name the connections of the visual cortex
|
 |
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What is the difference between the dorsal and ventral streams of the visual pathways
|
 |
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Occipital lobe is part of what unit in Luria's model?
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Unit 2
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Describe a theory of occipital lobe function
|
 |
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Damage to V4 -->
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Loss of colour cognition (cannot see, imagine or recall colour)
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Damage to V5-->
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Erases ability to percieve objects in motion, can only see objects at rest
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Damage to V3-->?
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Would have to include larger lesion of V4 to form deficity
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Damage to lesions in V1 -->
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Cortical blindness
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Protanopia
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-visual acuitiy is normal
-"red" cones may be filled with "green" opsin-confusion between red and green |
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What are three deficits in trichromatic coding?
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-Protoanopia-Deuteranopia-Tritanopia
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Name a general source of genetic defects in colour?
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Opsins and retinal (lipid) defects lead to alrterations in the trichromatic coding
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