Figure 3.

Eye plant dynamics are not altered by saccadic fatigue. A, Comparison of pre-fatigue and post-fatigue discharge properties of a single abducens neuron. Top, Position and velocity sensitivity data with their least-squares linear regression fits before and after the fatigue experiment. Insets provide the slopes and y-intercepts (with their 95% confidence intervals) of the regression lines. Bottom, Bootstrap distributions of the first- and second-order model parameters evaluated before (blue) and after (red) fatigue. On each histogram, the median values (thick lines) with their 95% confidence intervals (thin lines) are provided. B, Comparison of pre-fatigue and post-fatigue saccade-related properties of a population response of 62 neurons. Same measures as in A. The population activity was computed by dividing the range of saccade amplitudes into equally sized bins of 0.5°. Eye position traces and the associated spike density functions were then assigned to their corresponding bins and average saccades and firing rates were then computed across all trials and all neurons for each bin.