A Caltech Library Service

Attention activates winner-take-all competition among visual filters

Lee, D. K. and Itti, Laurent and Koch, Christof and Braun, Jochen (1999) Attention activates winner-take-all competition among visual filters. Nature Neuroscience, 2 (4). pp. 375-381. ISSN 1097-6256. doi:10.1038/7286.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Shifting attention away from a visual stimulus reduces, but does not abolish, visual discrimination performance. This residual vision with 'poor' attention can be compared to normal vision with 'full' attention to reveal how attention alters visual perception. We report large differences between residual and normal visual thresholds for discriminating the orientation or spatial frequency of simple patterns, and smaller differences for discriminating contrast. A computational model, in which attention activates a winner-take-all competition among overlapping visual filters, quantitatively accounts for all observations. Our model predicts that the effects of attention on visual cortical neurons include increased contrast gain as well as sharper tuning to orientation and spatial frequency.

Item Type:Article
Related URLs:
URLURL TypeDescription
Koch, Christof0000-0001-6482-8067
Additional Information:RECEIVED 24 NOVEMBER 1998; ACCEPTED 24 FEBRUARY 1999. Supported by NSF, NIMH, ONR and the NSF-ERC at Caltech. We thank T. Albright and T. Sejnowski for access to facilities and J. Gallant, A. Manwani, S. Shimojo, K. Watanabe and B. Zenger for comments and discussions.
Group:Koch Laboratory (KLAB)
Funding AgencyGrant Number
National Institute of Mental Health (NIMH)UNSPECIFIED
Office of Naval Research (ONR)UNSPECIFIED
Caltech Engineering Research CenterUNSPECIFIED
Issue or Number:4
Record Number:CaltechAUTHORS:20130816-103213173
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:40466
Deposited By: KLAB Import
Deposited On:11 Jan 2008 02:43
Last Modified:09 Nov 2021 23:49

Repository Staff Only: item control page