Fig. 8.

Spatial weighting functions and radial weighing functions of an S-on/L-off neuron (12° eccentric, recorded at the bottom of the parvocellular layers), as measured with L-, M-, and S-cone-isolating and luminance-modulated stimuli. Total region shown, 1.25° on a side; pixel size, 7.5 min. Delay between stimulus and response, 15–44 msec, the sum of the 15–30 and the 30–44 msec bins (see Materials and Methods). The luminance weighting function was multiplied by 2.0 to increase visibility. Conventions are as in Figure2.