Oculomotor delayed-response (ODR) task

A: relative timing of the fixation target, peripheral cue, and saccadic eye movement comprising an ODR trial.

B: cue array. ODR cue was presented each trial in 1 location chosen pseudorandomly from the 8 locations indicated.

C: diagramatic representation of ODR trial events (mokey's gazing location indicated, +). Fixation of a central target was acquired (panel 1) and maintained (panel 2) while a cue stimulus appeared in the periphery (panel 3). Fixation of the central target continued after peripheral cue offset for an several second delay period (panel 4). On offset of the fixation target, monkeys completed the trial by making a saccade toward the location where the cue appeared in the periphery before the delay period. If the saccade ended within an invisible response window (dotted circle), the trial was judged correct (panel 5).

Taken from M. V. Chafee and P. S. Goldman-Rakic, Matching Patterns of Activity in primate prefrontal area 8a and parietal area 7ip neurons during a spatial working memory task J. Neurophysiol. 79:2919-2940, 1998.