Time courses of MI: A. Between the left and right eyes’ velocities; B. Between the left and right eyes’ positions. The samples were paired between the eyes without delay relative to each other. The overestimation of MI was corrected by the difference between the MIOri and the mean MI obtained from 100 sample randomizations (): . MICor is averaged among all subjects for the saccade toward the left (red lines) and right (blue lines) in the sessions of Go-Only (solid lines) and Go/NoGo (dashed lines), on the 1st day (left panels) and 2nd day (right panels). Horizontal axes are the latency from the saccade initiation. The latencies of significantly stronger relationship are denoted by red square brackets for the leftward saccade relative to the rightward, by green square brackets for the saccades in the Go/NoGo sessions than the Go-Only except for the leftward saccade on the 2nd day, and by cyan square brackets for the saccades on the 1st day than the 2nd day except for the leftward saccade in the Go-Only session. The significant differences were revealed by ANOVA factoring the saccade direction, the session type, the experiment day and the subject (p < 0.05 for 10 ms or more). C. Time courses comparisons between the velocity MICor and the positional MICor. The red arrows that link the red horizontal bars suggest causal relationship between the velocity MICor and positional MICor with respect to the significant difference between the leftward and rightward saccades. The green horizontal bar indicates the latency of significant cognitive load effect, and the cyan one indicates that of significant day effect, obtained only for the positional MICor.