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Journal of Cognitive Neuroscience

Monthly
160 pp. per issue
8 1/2 x 11, illustrated
Founded: 1989
ISSN 0898-929X
E-ISSN 1530-8898
2007 ISI Impact Factor: 4.997

Journal of Cognitive Neuroscience

April 2005, Vol. 17, No. 4, Pages 580-590
Posted Online March 13, 2006.
(doi:10.1162/0898929053467550)
Partially Distributed Representations of Objects and Faces in Ventral Temporal Cortex

Alice J. O'Toole

The University of Texas

­ Fang Jiang

The University of Texas

­ Hervé Abdi

The University of Texas

­ James V. Haxby

Princeton University

­
PDF (2,773.519 KB) PDF Plus (175.982 KB)

Object and face representations in ventral temporal (VT) cortex were investigated by combining object confusability data from a computational model of object classification with neural response confusability data from a functional neuroimaging experiment. A pattern-based classification algorithm learned to categorize individual brain maps according to the object category being viewed by the subject. An identical algorithm learned to classify an image-based, view-dependent representation of the stimuli. High correlations were found between the confusability of object categories and the confusability of brain activity maps. This occurred even with the inclusion of multiple views of objects, and when the object classification model was tested with high spatial frequency “line drawings” of the stimuli. Consistent with a distributed representation of objects in VT cortex, the data indicate that object categories with shared image-based attributes have shared neural structure.

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Stephen José Hanson, Yaroslav O. Halchenko. (2008) Brain Reading Using Full Brain Support Vector Machines for Object Recognition: There Is No “Face” Identification Area. Neural Computation 20:2, 486-503
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Evelyn Eger, John Ashburner, John-Dylan Haynes, Raymond J. Dolan, Geraint Rees. (2008) fMRI Activity Patterns in Human LOC Carry Information about Object Exemplars within Category. Journal of Cognitive Neuroscience 20:2, 356-370
Online publication date: 1-Feb-2008.
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Chun-Chia Kung, Jessie J. Peissig, Michael J. Tarr. (2007) Is Region-of-Interest Overlap Comparison a Reliable Measure of Category Specificity?. Journal of Cognitive Neuroscience 19:12, 2019-2034
Online publication date: 1-Dec-2007.
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Alice J. O'Toole, Fang Jiang, Hervé Abdi, Nils Pénard, Joseph P. Dunlop, Marc A. Parent. (2007) Theoretical, Statistical, and Practical Perspectives on Pattern-based Classification Approaches to the Analysis of Functional Neuroimaging Data. Journal of Cognitive Neuroscience 19:11, 1735-1752
Online publication date: 1-Nov-2007.
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