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20 Cards in this Set
- Front
- Back
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What is the extrastriate cortrex?
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Any visual cortex outside of V1
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What is the organization of V2?
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Characterized by parallel bands running perpendicular to the V1-V2 border
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What are the 3 types of bands in V2?
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Thick Stripes, Thin Stripes, and Interstripes
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Which area is important for object discrimination?
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IT (inferotemporal cortex)
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Which area is important for landmark distribution?
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PPA (Posterior Parietal Cortex)
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The dorsal pathway is responsible for what?
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Spatial Vision - representing the scene in a way suitable for guiding action
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The ventral pathway is responsible for what?
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Object recognition
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What are the components of the dorsal pathway?
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V1 --> V2 --> MT (PPT) --> Parietal Lobe
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What are the components of the ventral pathway?
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V1 --> V2 --> V4 (IT) --> Temporal Lobe
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What the homunculus for motion?
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MT
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What are the properties of the MT selectivitt for orientation and motion?
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MT cells are DIRECTION selective but NOT orientation selective
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Lesions of MT produce what?
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Selective deficits in detecting/discrimination motion
(man scared of traffic/guests in house) |
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What is the term for inability to understand motion?
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Akinotopsia
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What area processes color?
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V4
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A color deficit is called what?
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Achomatopsia
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What color problem do networks of V4 cells solve?
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Color constancy
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What cells primarily drive the dorsal stream?
Ventral? |
Dorsal: M cells (motion)
Ventral: P cells (Color/shape) |
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A patient who presents with neglect (draws clock all on one side) probably has lesion where?
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PPA
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What is agnosia?
Prosopagnosia? |
Agnosia - can't tell what stuff is
Prosopagnosia - can't recognize faces |
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A patient who presents with agnosia and prosopagnosia probably has a lesion where?
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ITC
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