Figure 3.

Directional selectivity for saccades in the SEF neurons. Pie charts show numbers of directionally selective neurons and their laterality (Ipsi, ipsilaterally selective; Contra, contralaterally selective) and nonselective (NS) neurons. Histograms show magnitudes of the neurons' significant (black) or nonsignificant (white) directional biases. Results shown separately for rule-selecting saccades (activity in sac1 epoch; A), return saccades (refix epoch; B), and rule-implementing saccades (sac2 epoch; C).