FIGURE 3. The temporal properties of shifting RFs are predicted by corollary discharge from the SC–MD–FEF pathway.

a, Our hypothesis predicts that shifting RFs are synchronized with saccades. Shift activity (in the FF) for an example neuron is aligned to probe onset (left) and saccade initiation (right). Rasters of action potentials from each trial are sorted by saccadic latency (green dots). Eye position traces (horizontal component) are shown below. The green arrow indicates the average visual latency of this neuron. The vertical scale is in spikes s^-1. b, Strength of correlation (Pearson's R) between shift onset time and saccadic latency for the population. Mean R > 0 at P < 0.002. c, Shift onset time relative to saccade initiation for the population. There is no significant difference in shift onset time from 0 ms.