Inhibitory interneurons enable sparse code formation in a spiking circuit model of V1
© King et al; licensee BioMed Central Ltd. 2012
Published: 16 July 2012
Sparse coding accounts for several physiological properties of primary visual cortex (V1), including the shapes of simple cell receptive fields and the highly kurtotic firing rates of V1 neurons . Current spiking network models of pattern learning  and sparse coding  require direct inhibitory connections between the excitatory simple cells, in violation of Dale's Law which states that neurons can either excite or inhibit but not both. At the same time, the computational role of inhibitory neurons in cortical microcircuit function has yet to be fully explained.
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