Figure 5.

The mechanism of sensitivity. (A) μ_s, the average of the input distribution of Amp_PF, dependency of the mutual information is provided. The mutual information is normalized by the value of that with μ_s = 150. The brighter color indicates the larger volume. The white and black triangles denote Amp^∗, the amplitude of the PF input realizing the maximum of the mutual information, in the spine volume and in the cell volume, respectively. Amp^∗ = 100 in the spine volume and Amp^∗ = 235 in the cell volume. The input distribution of Amp_PF is utilized as the Gaussian distribution with STD = 40, SD. (B) The volume-dependency of the amplitude of the PF input realizing the maximum of the mutual information, Amp^∗ is provided. (C and D) The Amp_PF dependencies of $\Delta C{a}_{STD}^{\ast }$, the dynamic range of the distribution of Ca_res for Ca_res > θ (green), and σ_c, the SD of the distribution of Ca_res (blue). STD = 40 was used. The white and black triangles denote Amp^∗ in the spine volume and in the cell volume, respectively. To see this figure in color, go online.