Fig. 1.
Task design and data analysis plan. The figure represents the order of the stimuli during the trial including the timing of events. The timing information and the layout of the response buttons are displayed. Participants were required to use their left and right index fingers corresponding to the side of response. The example shows a trial of the no motor element overlap condition. Immediate Response has to be executed on the left side (button ‘4’) and Planned Response on the right side (buttons ‘6’, ‘3’, ‘6’). RT of the Immediate Response to S2 was measured from the onset of S2. A rectangle with dashed lines represents the cumulated RT of the Planned Response to S1, i.e. from the release of the Immediate Response button to the release of the last button of the Planned Responses. The neurophysiological activations linked to different response windows are marked by arrows. First, the prepotent activation of the Planned Responses are represented (LRP 0–200 ms), which has to be overwritten by the Immediate Response (LRP 220–420 ms), and finally, the Planned Responses can be executed (LRP 600–1000 ms).
