Figure 5.

Microstimulation of the abducens nucleus confirms the absence of muscular fatigue. Top, Eye position (first row) and velocity (second row) traces of the stimulation-evoked eye movements at four different stimulus frequencies were highly similar before (blue) and after (red) a fatigue session, and after a subsequent rest period (green). The traces are aligned on saccade onset. Bottom, Mean amplitudes and peak velocities of the stimulated saccades for all 15 experimental sessions (small open squares) together with their average values (large filled squares).