SC microstimulation experimental sessions.

Significant regions at a voxel level of p<0.05 corrected for multiple comparisons. Coordinates (mm) are given in relation to the anterior commissure. D, downward; FEF, frontal eye field; LIP, lateral intraparietal area; R, right; SC, superior colliculus; U, upward. aNumbers indicate the saccade threshold in the awake animal and numbers in brackets indicate the saccade threshold in the anesthetized animal. bNo detectable saccade was evoked at this site but we recorded fixation-related activity. The stimulation current during the imaging session was set to 400 µA (same as at the caudal site in the same session).