Skip Navigation

This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (20)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Tootell, R. B.H.
Right arrow Articles by Orban, G. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Tootell, R. B.H.
Right arrow Articles by Orban, G. A.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Cerebral Cortex April 2004; 14:353-363
© Oxford University Press 2004

Feature Article

Search for Color ‘Center(s)’ in Macaque Visual Cortex

Roger B.H. Tootell1,, Koen Nelissen2,, Wim Vanduffel1,2, and Guy A. Orban2

1 Nuclear Magnetic Resonance Center, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, Boston, MA 02115, USA, 2 Laboratorium voor Neuro- en Psychofysiologie, KU Leuven Medical School, Leuven B 3000, Belgium, The first three authors contributed equally to this study.

It is often stated that color is selectively processed in cortical area V4, in both macaques and humans. However most recent data suggests that color is instead processed in region(s) antero-ventral to V4. Here we tested these two hypotheses in macaque visual cortex, where ‘V4’ was originally defined, and first described as color selective. Activity produced by equiluminant color-varying (versus luminance-varying) gratings was measured using double-label deoxyglucose in awake fixating macaques, in multiple areas of flattened visual cortex. Much of cortex was activated near-equally by both color- and luminance-varying stimuli. In remaining cortical regions, discrete color-biased columns were found in many cortical visual areas, whereas luminance-biased activity was found in only a few specific regions (V1 layer 4B and area MT). Consistent with a recent hypothesis, V4 was not uniquely specialized for color processing, but areas located antero-ventral to V4 (in/near TEO and anterior TE) showed more color-biased activity.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Cereb CortexHome page
L. G. Ungerleider, T. W. Galkin, R. Desimone, and R. Gattass
Cortical Connections of Area V4 in the Macaque
Cereb Cortex, March 1, 2008; 18(3): 477 - 499.
[Abstract] [Full Text] [PDF]

Home page
 Cereb CortexHome page
B. R. Conway and D. Y. Tsao
Color Architecture in Alert Macaque Cortex Revealed by fMRI
Cereb Cortex, November 1, 2006; 16(11): 1604 - 1613.
[Abstract] [Full Text] [PDF]


Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.