Table 2.
Table 2.

Summary of muscimol results

  • Summary of the results of the three muscimol experiments in monkeys AL and CR. Column Q identifies the saccade vector quadrant (e.g., I: 0 ≤ φ ≤ 90 deg, etc.). Preinjection and postinjection data are quantified by the relation between the initial torsional eye position,rAx, and the subsequent torsional displacement of the saccade,dABx. The slope of this relation, s (dimensionless), is given in the left column, the correlation coefficient, r, in the center column, and the number of data points, N, in the right column. Offsets were indistinguishable from zero in all cases. Standard deviations were obtained by bootstrapping the data 100 times. P indicates whether the pre- and postinjection data are significantly different from each other.

  • F2_152 , Significantly lower slope (P < 0.0001);

  • F2_150 , significantly higher slope. We have also analyzed the data by including a “dead zone” of 0.6 deg, which excluded torsional onset positions within a range roughly equal to the standard deviation of a normal Listing’s plane. In that case, correlation coefficients increased dramatically, and the lesion effects were even more prominent. For example, for the data presented in Figure 8 (quadrants I and III of experiment CR19), we found:

  • Prelesion: QI: s = −0.54 (r = −0.63,N = 163); QIII: s = −0.39 (r = −0.53, N = 171);

  • Postlesion: QI: s = −0.09 (r = −0.17,N = 138); QIII: s = −0.35 (r = −0.62, N = 138).