Figure 8.

Changes in the spatial signal from prefrontal neurons after maturation are consistent across monkeys and cortical areas

Data are from the young (256 neurons, blue bars) and adult samples (338 neurons, red bars) of VM neurons recorded during performance of the antisaccade task. As in Figure 7E, the spatial signal (S_ROC) from the recorded neurons was based on the spike count measured in a 50 ms presaccadic window in each trial, but here trials were pooled into two rPT groups only, short and long.

(A) Results for short processing times (70 ≤ rPT <170 ms) are shown for each monkey (1–4), for each cortical area (8a or 46), and for all the neurons (All). Bars show S_ROC values for the young (blue) and adult (red) stages, and gray shades and error bars indicate 68% and 95% CIs, respectively, obtained by bootstrapping (Methods).

(B) As in A, but for long processing times (170 ≤ rPT ≤300 ms). Note that no VM neurons were recorded from monkey 2 as an adult, and that few trials (51) were available from young monkey 1 at short rPTs.

(C) Neurometric curves based on VM neurons recorded from monkey 4.

(D) Neurometric curves based on VM neurons recorded from monkeys 1, 2, and 3 combined. S_ROC values in C, D were computed as described for Figure 7E.