Functional roles of ascending inhibition.

<p>(A). The power spectra of STA of LFPs in the attended and unattended columns, without ascending inhibition from L5 SI cells to L4 FS cells. (B). Comparison of AI(), with and without ascending inhibition. (C). Difference in average membrane potentials between L4 E and L4 FS cells, , where is the mean value of membrane potentials over 20 cells. Thus, positive peaks represent moments when more L4 E cells spike than L4 FS cells, and negative peaks show moments when more L4 FS cells spike more than L4 E cells. The membrane potential difference in the attended column is compared, with and without ascending inhibition. (D). Comparison of the firing rate of L4 E cells of the attended column, with and without ascending inhibition. (E). Comparison of between the attended and unattended columns with ascending inhibition. (F). Comparison of the firing rate of L4 E cells between the attended and unattended columns.