Chapter 4: Object Recognition - Play Psych Mun

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Constraints: Coordinate systems cont.• Two possibilities:1. <strong>Object</strong>-centeredcenteredcoordinate system2. A cluster of multipleviewer-centered objectrepresentations plusthe ability to transformone representation toanother as necessary(a la Multiple Viewsmodel of Tarr, , 1995).
Constraints: Coordinate systems cont.• Farah prefers the Multiple Viewer-Centeredrepresentation option because:– Position, size, and orientation invariance shown by ITcells is not perfect; consistent with some views beingbetter learned than others.– IT neurons can selectively learn arbitrary associationsbetween pairs of stimuli, a prerequisite for derivinginvariance from viewer-centered representations.– Consequently, because cell activity takes time todecay and because seeing different views of an objecttends to be clustered in time, the correlation(association) between several different retinotopicviews of the same object could be learned.
Page 2 and 3: Object Recognition• Dr. Harley ha
Page 4 and 5: Visual Agnosias: : Copying anddrawi
Page 6 and 7: Associative agnosia behavior: Animp
Page 8 and 9: Regions of brain damage associatedw
Page 10 and 11: BUT: Is Perceptual CategorizationDe
Page 12 and 13: Functional Neuroimaging Studies:•
Page 14 and 15: Where in the brain does visualrecog
Page 16 and 17: Neuroimagining Studies of ObjectRec
Page 18 and 19: Localizing Visual Recognition• Is
Page 22 and 23: Constraints: Primitives and Organiz
Page 24: Constraints: Implementation• Dist

Chapter 4: Object Recognition - Play Psych Mun

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