Fig. 2.

CSs were tuned with respect to the direction of the target, and this tuning was anatomically organized. (A) CS response aligned to target onset. For each target type, the direction of stimulus that produced the greatest probability of CS was labeled as CS-on. Eye velocity is shown in gray. (B) CS response aligned to saccade onset. Modulation of CS response was present before saccades that were visually instructed. The response was muted before other saccades. (C) Within-cell difference between CS-on directions as computed following the onset of the primary target, the secondary target, and the central target. We found no systematic differences in the estimate of CS-on between various types of targets, and thus combined the response for all targets to compute the CS-on of each P cell. (D) Distribution of CS-on across the population of P cells. (E) CS tuning function. (F) Distribution of directions of CS-on in various regions of the vermis in two animals. Error bars are SEM.