Figure 6.

Functional subgroups: time course of FR and FF. Average normalized FR (top) and FF (bottom) values as a function of radial distance from the RF location for subpopulations of cells divided by visual responsiveness and spatial selectivity during the delay. The four subpopulations include visually responsive and delay-selective cells (Visual + Delay) (A), visually responsive and delay-nonselective cells (Visual + NonDelay) (B), non-visually responsive and delay-selective cells (NonVisual + Delay) (C), and non-visually responsive and delay-nonselective cells (NonVisual + NonDelay) (D). Conventions are the same as in Figure 2. F1, Flash 1; IFI, interflash interval; F2, flash 2.