Figure 3.
Activity of omnipause neurons (OPNs) during saccades and smooth pursuit. (a) Average eye position and spike density (neuronal activity) of a single OPN during saccades (n = 10 trials). Note that the activity abruptly started to decrease approximately 15 ms before saccade onset and recovered 5 ms after saccade end. During saccades, no activity was observed. (b) Average eye velocity and spike density during pursuit trials without saccades in a single OPN (n = 14 trials). The spike density decreased around the time of pursuit onset. However, the activity did not drop to zero (‘pause’) as observed during saccades. Reproduced with permission from Missal & Keller [45].