Fig. 1: Behavioral task.
From: Functional role of cell classes in monkey prefrontal cortex after learning a working memory task
A Spatial task. The sequence of events in the spatial task included fixation, stimulus presentation, and delay periods. During the pre-training phase, monkeys maintained fixation while stimuli appeared passively in different spatial locations. In the post-training phase, after the second delay period, choice targets appeared, requiring the monkey to saccade to a target based on the spatial match of the stimuli. B Feature task. The sequence of events in the feature task included fixation, stimulus presentation, and delay periods. During pre-training, monkeys maintained fixation while different shapes were presented passively. In the post-training phase, after the delay period, choice targets appeared, requiring the monkey to saccade to a target based on the feature match of the stimuli. C Stimulus sets. The spatial set consisted of nine possible locations arranged on a 3 × 3 grid. The feature set included eight distinct shapes: square, triangle, circle, diamond, plus sign, H, number sign, and inverted Y.
