Figure 4. Analysis of rate drift after complete left inactivation.

(a) Mean drift in firing rate when the eyes were in each half of the oculomotor range for individual experiments recording from right-side cells during control and inactivation. Data points below zero of the ordinate indicate times when firing rate was decreasing, and points in the upper half indicate times when rate was increasing. Corresponding data points from an individual experiment are connected by a line. (b,c) Rate drift at different positions during the control (b) and inactivation (c) conditions for the population. Gray points correspond to samples over 0.3 s during a fixation; black points, dashes and vertical bars correspond to means, modes and twice the s.d., respectively, of the gray data points in bins of 5 deg. Data on perimeter as in Figure 2d,e. (d) Difference of the average inactivation from average control data over separate bins. Vertical black segments are 95% confidence intervals, many of which fell within the diameter of point.