A Biologically Plausible Mechanism for Neuronal Coding Organized by the Phase of Alpha Oscillations
SourceEuropean Journal of Neuroscience, 44, (2016), pp. 2147-2161
Article / Letter to editor
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PI Group MR Techniques in Brain Function
PI Group Neuronal Oscillations
European Journal of Neuroscience
Subject150 000 MR Techniques in Brain Function; 160 000 Neuronal Oscillations; Neuroinformatics
The visual system receives a wealth of sensory information of which only little is relevant for behavior. We present a mechanism in which alpha oscillations serve to prioritize different components of visual information. By way of simulated neuronal networks we show that inhibitory modulation in the alpha range (~10 Hz) can serve to temporally segment the visual information to prevent information overload. Coupled excitatory and inhibitory neurons generate a gamma rhythm in which information is segmented and sorted according to excitability in each alpha cycle. Further details are coded by distributed neuronal firing patterns within each gamma cycle. The network model produces coupling between alpha phase and gamma (40-100 Hz) amplitude in the simulated local field potential similar to that observed experimentally in human and animal recordings. This article is protected by copyright.
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