A network model with pyramidal cells and GABAergic non-FS cells in the cerebral cortex

Authors:
Kenji Morita;Kazuyuki Aihara
Affiliations:
Department of Complexity Science & Engineering, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan;ERATO Aihara Complexity Modelling Project, JST Maeda Building, 45-18 Oyama, Shibuya-ku, Tokyo 151-0065, Japan and Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, ...
Venue:
Neurocomputing
Year:
2005

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Abstract

Recent experiments revealed that there exist electrophysiologically, anatomically, and functionally distinct two classes of GABAergic interneurons in the cerebral cortex, fast spiking (FS) cells, and non-FS cells. We propose a network model of cortical local circuits including dendritic inhibition, which is the anatomical hallmark of the non-FS cells. While conventional lateral inhibition models always converge to winner-take-all states if the self-excitation is strong, our model does so only for appropriate inputs, but otherwise converges to another states, in which all the neurons have little activities, even if the self-excitation is strong enough to keep the winner's activity after the extinction of the inputs.