Figure 4.

Antisaccade performance for individual subjects

(A) Tachometric curves showing the proportion of correct responses at each rPT bin (bin width = 40 ms). Each curve combines trials from all gap conditions either in the young (blue) or adult (red) stage. For each curve, the light shaded ribbon denotes the mean proportion correct ±1 SE from the experimental data, and the dark trace is a continuous function fitted to those data (Methods).

(B–D) Three quantities derived from the tachometric curve and used to characterize antisaccade performance for each monkey and for their combined data (All). The rPT at criterion (B) is the processing time at which performance reaches 75% correct. The probability that a saccade is captured by the cue (C) is based on how much the tachometric curve dips below chance. And the asymptote (D) is the performance level attained at long rPTs. For all quantities, bars show 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).