FIG. 2.

Schematic of the race model showing the expected effects of blinks. The stop and go processes race toward their respective thresholds (dashed red and solid green lines, respectively). If the go process finishes first, the movement is generated (noncancelled trial). If the stop process finishes first, the saccade is successfully cancelled. An eye blink effectively lowers the threshold for saccade initiation by turning off the omnipause neurons (OPNs, right). In some cases, this allows the go process to “win” the race when it would otherwise have “lost.”