Fig. 1.

Spatial working memory task paradigm. (A) A schematic of the block sequence of task (Load 1 or Load 3) and fixation periods in a run. (B) A schematic showing a yes and no trial in Load 1 and in Load 3. In each task block, subjects were presented with either 1 (Load 1) or 3 (Load 3) rabbits at different locations and were required to track these locations and make yes/no responses through 5 trials per block. Delay between trials was jittered (2.3, 3.3 or 4.8 s). (Stimuli not to scale).