Figure 11.

Deficits in smooth pursuit eye movements after ibotenic acid injections: sample temporal profiles (monkey P) and response measures (monkeys, P and S). A: Mean eye velocity (°/s) over time (ms) in response to multiple presentations of 20°/s leftward and rightward ramps before (thick traces) and after (thin traces) the injections; upward deflections denote rightward eye movements and gaps are due to deletions of saccadic intrusions. B: Percentage reductions in the pursuit responses, based on the mean changes in eye position over i) the time period 100–150 ms (continuous lines: pre-saccadic, open-loop responses), and ii) the time period 300–350 ms (dashed lines: post-saccadic, closed-loop responses), both measured from the onset of the stimulus ramps; red, leftward ramps; blue, rightward ramps; abscissa: stimulus speed (°/s).