psychophysics of the structure of object memory
DESCRIPTION
Psychophysics of the structure of object memory. Cristina Savin. Overview. Prototype referenced encoding of faces LOC and object representation 3D objects. Object representation. Region specific: Objects: LOC Faces: FFA Tools, etc. LOC. Lateral Occipital Complex Object representation. - PowerPoint PPT PresentationTRANSCRIPT
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Psychophysics of the structure of object memory
Cristina Savin
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Overview
• Prototype referenced encoding of faces
• LOC and object representation
• 3D objects
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Object representation
• Region specific:– Objects: LOC– Faces: FFA– Tools, etc.
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LOC
• Lateral Occipital Complex
• Object representation
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Face representation
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Prototype-referenced representation
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LOC adaptation
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Contralateral hemisphere
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Retinal vs Head centered
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Both
-small retinal-significantly more adaptation in for the same side-results suggest a head/body centered reference frame in LOC
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3D Objects: a set of gluons
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One-shot viewpoint invariance in matching novel objects
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3D objects representation: a critique
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References
• D. Leopold et al., Prototype-referenced shape encoding revealed by high-level aftereffects , Nature Neuroscience, 4(1), p.89, 2001. I.
• Biederman and M. Bar, One-shot viewpoint invariance in matching novel objects , Vision Research, 39(17), p.2885, 1999.
• M. Tarr et al., Three-dimensional object recognition is viewpoint dependent , Nature Neuroscience, 1(4), p.275, 1998.
• A. McKyton and E. Zohary, Beyond Retinotopic Mapping: The Spatial Representation of Objects in the Human Lateral Occipital Complex, Cerebral Cortex, 17:1164-1172, 2007.