Competitive dynamics in cortical responses to visual stimuli.

Samat Moldakarimov; Julianne E Rollenhagen; Carl R Olson; Carson C Chow

doi:10.1152/jn.00159.2005

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Competitive dynamics in cortical responses to visual stimuli.

Samat Moldakarimov·Julianne E Rollenhagen·Carl R Olson·Carson C Chow

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Abstract

Neurons in the visual cortex of the macaque monkey exhibit a variety of competitive behaviors, including normalization and oscillation, when presented with multiple visual stimuli. Here we argue that a biophysically plausible cortical circuit with opponent inhibition, spike-frequency adaptation, and synaptic depression can account for the full range of behaviors. The governing parameter is the strength of inhibition between competing neuronal pools. As the strength of inhibition is increased, the pattern of network behavior shifts from normalization mode to oscillatory mode, with oscillations occurring at progressively lower frequency until, at the extreme, winner-take-all behavior appears.

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Action Potentials Animals Biological Clocks Computer Simulation Evoked Potentials, Visual Feedback Macaca mulatta Male Models, Neurological Nerve Net Neural Inhibition Neurons, Afferent Photic Stimulation Task Performance and Analysis Visual Cortex Visual Perception Journal Article Research Support, N.I.H., Extramural Research Support, U.S. Gov't, P.H.S.

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Samat Moldakarimov, Julianne E Rollenhagen, Carl R Olson, Carson C Chow. 2005-06-08. Competitive dynamics in cortical responses to visual stimuli.. https://doi.org/10.1152/jn.00159.2005

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