Fig. 6. Broad inhibitory projections reduce information flow.

(A) The linear Fisher information from the L2/3 excitatory neurons is largely reduced as the inhibitory projection width (σ_i) increases. The asymptotic values of I_F at N = ∞ (dots) are estimated by fitting Eq. 10 (see Materials and Methods). Solid curves are the fits of I_F (the linear fits shown in fig. S1C). Open circles are the numerical estimation of the linear Fisher information (Eq. 8). Error bars are the 95% confidence intervals. (B) The probability density distributions of OSI of the excitatory neurons from L2/3. (C) Pairwise noise correlations as a function of distance between a neuron pair in L2/3.