Figure 4.

Deficits in OFRs after ibotenic acid injections: dependence on stimulus speed (data for each of the five monkeys). Ordinate, Percentage of reduction in the OFRs for each monkey, based on the mean changes in eye position (in degrees; over the time period 50–100 ms measured from onset of the stimulus ramps) averaged for all four cardinal directions. Abscissa, Stimulus speed (in degrees per second). Error bars indicate 1 SD. ○, Monkey Q; △, monkey N; ▽, monkey P; □, monkey R; ◇, monkey S. vel., Velocity.