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Lateral interactions in primary visual cortex: a model bridging physiology and psychophysics

Stemmler, Martin and Usher, Marius and Niebur, Ernst (1995) Lateral interactions in primary visual cortex: a model bridging physiology and psychophysics. Science, 269 (5232). pp. 1877-1880. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20130816-103230351

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Abstract

Recent physiological studies show that the spatial context of visual stimuli enhances the response of cells in primary visual cortex to weak stimuli and suppresses the response to strong stimuli. A model of orientation-tuned neurons was constructed to explore the role of lateral cortical connections in this dual effect. The differential effect of excitatory and inhibitory current and noise conveyed by the lateral connections explains the physiological results as well as the psychophysics of pop-out and contour completion. Exploiting the model's property of stochastic resonance, the visual context changes the model's intrinsic input variability to enhance the detection of weak signals.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.7569930DOIArticle
http://www.sciencemag.org/content/269/5232/1877.abstract?sid=0be2176e-75e4-4c2d-a1ad-eff3c2f65c8dPublisherArticle
http://www.jstor.org/stable/2889275JSTORArticle
Additional Information:Received 3 April 1995 ; accepted 27 July 1995. Supported by the Howard Hughes Medical Institute, the National Institutes of Mental Health (grants MH47566 and MH45156), the Office of Naval Research, the Air Force Office of Scientific Research, the National Science Foundation, the Center for Neuromorphic Systems Engineering as a part of the National Science Foundation Engineering Research Center Program, and by the Office of Strategic Technology of the California Trade and Commerce Agency. We thank J. Knierim, K. Grieve, F. Worg6tter, and C. Koch for discussions; A. Zador, U. Polat, and M. Sur for access to unpublished data; G. Blasdel for providing the orientation map underlying Fig. 1; and C. Koch and J. McClelland for a stimulating work environment.
Group:Koch Laboratory, KLAB
Funders:
Funding AgencyGrant Number
Howard Hughes Medical Institute (HHMI)UNSPECIFIED
National Institute of Mental Health (NIMH)MH47566
National Institute of Mental Health (NIMH)MH45156
Office of Naval Research (ONR)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
NSFUNSPECIFIED
Center for Neuromorphic Systems Engineering, CaltechUNSPECIFIED
California Trade and Commerce Agency, Office of Strategic TechnologyUNSPECIFIED
Record Number:CaltechAUTHORS:20130816-103230351
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130816-103230351
Official Citation:Lateral interactions in primary visual cortex: a model bridging physiology and psychophysics M Stemmler, M Usher, and E Niebur Science 29 September 1995: 269 (5232), 1877-1880. [DOI:10.1126/science.7569930]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:40522
Collection:CaltechAUTHORS
Deposited By: KLAB Import
Deposited On:31 Oct 2008 00:44
Last Modified:19 Nov 2015 00:46

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