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Ishai A, Ungerleider LG, Martin A, Haxby JV.

The Representation of Objects in the Human Occipital and Temporal Cortex

fMRIDC Accession Number: 2-2000-1113D
Journal of Cognitive Neuroscience 2000 Nov ;12(suppl. 2): p.35-51
PubMed ID: 11506646 (off-site link)
 Study Meta-Data

Recently, we identified, using fMRI, three bilateral regions in the ventral temporal cortex that responded preferentially to faces, houses, and chairs [Ishai, A.,Ungerleider, L.G., Martin, A., Schouten, J.L., & Haxby, J. V. (1999). Distributed representation of objects in the human ventral visual pathway. Proceedings of the National Academy of Sciences, U.S.A. 96, 9379-9384]. Here, we report differential patterns of activation, similar to those seen in the ventral temporal cortex, in the bilateral regions of the ventral occipital cortex. We also found category-related responses in the dorsal occipital cortex and in the superior temporal sulcus. Moreover, rather than activating discrete, segregated areas, each category was associated with its own differential pattern of response across a broad expanse of cortex. The distributed patterns of response were similar across tasks (passive viewing, delayed matching) and presentation formats (photographs, line drawings). We propose that the representation of objects in the ventral visual pathway, including both occipital and temporal regions, is not restricted to small, highly selective patches of cortex but, instead, is a distributed representation of information about object form. Within this distributed system, the representation of faces appears to be less extensive as compared to the representations of nonface objects.

Supplemental Information

Language: English
fMRIDC Comments: Faces, Houses, and Chair Stimuli Dataset Size: 1.4M Available on 1 CD
Country: USA
Magnetic Field Strength: 1.5T
Scanner Manufacturer: GE LX
Analysis Software: Custom
Cognitive Domain: Vision
Subjects: 5 (exp 1), 6 (exp 2)
Age Range: 26±3
Functional Runs: 12
Has anatomical data
Has behavioral data
Has raw image data
Has high-res images
Has preprocessed image data
Comments on The Representation of Objects in the Human Occipital and Temporal Cortex by interch on February 10, 2005 @18:02
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Re: Comments on The Representation of Objects in t by Finn Årup on November 1, 2004 @05:11 [ Reply ]
This article is also represented in the Brede database as: http://hendrix.imm.dtu.dk/services/jerne/brede/WOBIB_28.html

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