Fig. 1. Flanker task design.

A Rat task design. Rats underwent 300 trial Flanker task test sessions. In each trial, the flankers appeared on the screen 1000 ms prior to the target stimulus presentation. Target presentation coincided with the appearance of two response boxes (shown in blue) and the opportunity to respond. Immediately following a response, a 1000 ms tone was presented to indicate the accuracy, and correct responses were rewarded. B Human task design. The flankers were presented for 100 ms prior to the target presentation. The target stimulus was presented for 50 ms, after which time the full stimulus complex was removed and subjects had 1850 ms to respond. Following the response period, there was jittered inter-stimulus interval which preceded the presentation of visual feedback.