Figure 3.

Deficits in OFRs after ibotenic acid injections (histograms for each of the five monkeys). R, L, U, and D, The percentage of reductions in the OFRs (based on the changes in eye position over the time period 50–100 ms) to rightward, leftward, upward, and downward motion, respectively, averaged for five speeds ranging from 10 to 160°/s; R-L, U-D, and H-V, differences between the mean percentage reductions to rightward and leftward, upward and downward, horizontal (R plus L), and vertical (U plus D), respectively.