Exogenous capture accounts for fundamental differences between pro- and antisaccade performance
- Department of Neurobiology and Anatomy, Wake Forest School of Medicine, United States
Figures
Figure 1 with 1 supplement
The urgent tasks.
(a) The compelled antisaccade (CAS) task. After a fixation period (500, 600, or 700 ms), the central fixation point disappears (Go), instructing the participant to look to the left or to the right …
Figure 1—figure supplement 1
Nonurgent variants of the tasks.
(a) The delayed antisaccade task. After a fixation period (500, 600, or 700 ms), the cue is revealed (Cue on, ±8°). After a delay period (Delay, 100 or 200 ms), the central fixation point disappears …
Figure 2
Turning a model of antisaccade performance into one of prosaccade performance.
(a–c) Three single antisaccade trials simulated with the CAS model. The cue is assumed to be on the left and the gap is 150 ms. Traces show motor plans toward the left (red, incorrect) and …
Figure 3
Model predictions.
(a) Simulated tachometric curves for the pro- (blue trace) and antisaccade tasks (red trace). Same curves as in Figure 2d, but superimposed. (b) Same data as in a, but shown over a smaller rPT range …
Figure 4 with 3 supplements
Early departure from chance during pro- and antisaccade performance.
(a) Tachometric curves for pro- (blue trace, 24,638 trials) and antisaccade trials (red trace, 22,608 trials) combined over 10 participants. Shades indicate 95% confidence intervals (CIs) across …
Figure 4—figure supplement 1
Performance in blocked versus interleaved trials.
In all panels, colors mark data collected in blocks of same-task trials (green) or in blocks in which pro and anti trials were randomly interleaved (orange). (a) Tachometric curves for prosaccade …
Figure 4—figure supplement 2
Perceptual performance is largely invariant with respect to gap value.
Each panel shows several tachometric curves superimposed. Each curve was constructed by selecting, from the complete dataset pooled across participants, only the pro or anti trials with a given gap. …
Figure 4—figure supplement 3
Individual results for the three participants who performed the luminance experiment.
Each column corresponds to one participant. (a) Tachometric curves for antisaccade trials with a high- (bright trace) or a low-luminance cue (dark trace). Shaded error bands indicate 95% CIs from …
Figure 5 with 1 supplement
Tachometric curves conditioned on target-location history.
Each panel shows choice accuracy as a function of processing time when the target location in a given trial was the same as in previous trials (green curves) or when it was different (magenta …
Figure 5—figure supplement 1
Effect of motor bias on antisaccade performance in individual participants.
(a) Rise point of the tachometric curve for trials in which the target switched locations (y-axis) versus trials in which the target location was repeated (x-axis). Colors indicate results for trial …
Figure 6
Variations in the timing of exogenous and endogenous modulation across participants.
(a) Tachometric curves in the compelled antisaccade task for all 10 participants. Dotted line indicates chance performance (0.5). (b) As in a, but for the compelled prosaccade task. (c) Comparison …
