Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Originally published in Science Express on 18 September 2003
Science 31 October 2003:
Vol. 302. no. 5646, pp. 878 - 881
DOI: 10.1126/science.1087839
Prev | Table of Contents | Next

Reports

Flexible Retinotopy: Motion-Dependent Position Coding in the Visual Cortex

David Whitney,*1 Herbert C. Goltz,2 Christopher G. Thomas,1 Joseph S. Gati,2 Ravi S. Menon,2 Melvyn A. Goodale1

Although the visual cortex is organized retinotopically, it is not clear whether the cortical representation of position necessarily reflects perceived position. Using functional magnetic resonance imaging (fMRI), we show that the retinotopic representation of a stationary object in the cortex was systematically shifted when visual motion was present in the scene. Whereas the object could appear shifted in the direction of the visual motion, the representation of the object in the visual cortex was always shifted in the opposite direction. The results show that the representation of position in the primary visual cortex, as revealed by fMRI, can be dissociated from perceived location.

1 The Department of Psychology, The University of Western Ontario, London, Ontario N6A 5C2, Canada.
2 The Robarts Research Institute, London, Ontario, N6A 5K8, Canada.

* To whom correspondence should be addressed: e-mail: dvw{at}uwo.ca

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Position Perception: Influence of Motion With Displacement Dissociated From the Influence of Motion Alone.
D. Linares and A. O. Holcombe (2008)
J Neurophysiol 100, 2472-2476
   Abstract »    Full Text »    PDF »
Perceived Size and Spatial Coding.
D. H. Arnold, A. Birt, and T. S. A. Wallis (2008)
J. Neurosci. 28, 5954-5958
   Abstract »    Full Text »    PDF »
Assessment of Stimulus-Induced Changes in Human V1 Visual Field Maps.
J. V. Liu, H. Ashida, A. T. Smith, and B. A. Wandell (2006)
J Neurophysiol 96, 3398-3408
   Abstract »    Full Text »    PDF »
Visual Area V5/MT Remembers "What" but Not "Where".
G. Campana, A. Cowey, and V. Walsh (2006)
Cereb Cortex 16, 1766-1770
   Abstract »    Full Text »    PDF »
The primary visual cortex fills in color.
Y. Sasaki and T. Watanabe (2004)
PNAS 101, 18251-18256
   Abstract »    Full Text »    PDF »
Asymmetry in Visual Cortical Circuits Underlying Motion-Induced Perceptual Mislocalization.
Y.-X. Fu, Y. Shen, H. Gao, and Y. Dan (2004)
J. Neurosci. 24, 2165-2171
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)