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
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
Face representation
Prototype-referenced representation
LOC adaptation
Contralateral hemisphere
Retinal vs Head centered
Both
-small retinal-significantly more adaptation in for the same side-results suggest a head/body centered reference frame in LOC
3D Objects: a set of gluons
One-shot viewpoint invariance in matching novel objects
3D objects representation: a critique
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.