FIGURE 4.

Heat maps of cross correlation (CC, left) and WCLR (right) for an illustrative trial (E1T1). Measures are applied to periods of 10 s. The x-axis corresponds to the end point of the time window. The y-axis corresponds to the length of the windowed time lag; a positive sign means that behavior of participant Pa can explain that of Pb after the given delay (conversely, a negative sign means that the direction of influence instead goes from Pb to Pa). Thus, it starts at 15 s because a lag time of 5 s means that we compare Pa’s activity from 0 to 10 s with Pb’s activity from 5 to 15 s (or vice versa for a lag time of –5 s). The vertical lines after 30 s represent the nearly instantaneous moment of clicking by both players.