Itti, Laurent and Braun, Jochen and Lee, Dale K. and Koch, Christof (1999) Attentional Modulation of Human Pattern Discrimination Psychophysics Reproduced by a Quantitative Model. In: Advances in Neural Information Processing Systems 11 (NIPS 1998). Advances in Neural Information Processing Systems. No.11. MIT Press , Cambridge, MA, pp. 789-795. ISBN 0-262-11245-0 http://resolver.caltech.edu/CaltechAUTHORS:20160229-112631799
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We previously proposed a quantitative model of early visual processing in primates, based on non-linearly interacting visual filters and statistically efficient decision. We now use this model to interpret the observed modulation of a range of human psychophysical thresholds with and without focal visual attention. Our model - calibrated by an automatic fitting procedure - simultaneously reproduces thresholds for four classical pattern discrimination tasks, performed while attention was engaged by another concurrent task. Our model then predicts that the seemingly complex improvements of certain thresholds, which we observed when attention was fully available for the discrimination tasks, can best be explained by a strengthening of competition among early visual filters.
|Item Type:||Book Section|
|Additional Information:||© 1999 Massachusetts Institute of Technology. This research was supported by ONR and NSF (Caltech ERC).|
|Group:||Koch Laboratory, KLAB|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Kristin Buxton|
|Deposited On:||29 Feb 2016 19:36|
|Last Modified:||29 Feb 2016 19:36|
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