Fig. 1.

Experiment design and the sliding-window method. (A) Stimuli for the finger-tapping task in the chosen condition (top row) and the specified condition (bottom row). In both chosen and specified trials, permitted actions were indicated by the filled circles and non-permitted actions were indicated by the unfilled circles. (B) Examples of trials. The task stimulus was presented 1000 ms at the beginning of each trial, followed by a 1400 ms interval during which the hand image with four unfilled circles were presented. (C) Entropy measures were calculated in a sliding-window (15-trial length in the illustration) along a sequence of events, and the TE and SE values were assigned to the last trial within each window (as indicated by the arrows). The sliding-window moved forward one trial each time and a new entropy measure was calculated. As such, this approach generated associated TE and SE series from sequences of trial events or actions.