Figure 8.

Modeled ganglion cell responses at increasing levels of light adaptation. (A) Transfer functions for photoreceptor output (L, Eq. 6) at increasing levels of light adaptation (i.e., increasing levels of horizontal cell feedback), taken from Figure 7C. (B) Transfer functions for ganglion cell responses (R, Eq. 11), obtained by high-pass filtering the curves in (A). (C) Same as (B), but plotted on semilog coordinates. These curves are reproduced in Figure 2 of the main text. From left to right within each panel, values of feedback strength are: g = 0, 0.1, 0.2, 0.5, and 1.0.