Data analysis
All trials were included in the analysis, irrespective of performance. To evaluate the time course of how participants responded to the lateral target jump, we analysed the lateral motion of the finger. We first converted the measured lateral positions of the finger (Fig. Overview of the steps in data analysis using data for the late conditions from one participant in the obstacles group. To assess whether the response to the target jump was modulated by the change in gap size, we determined the To determine whether the response to the target jump was modulated by the change in gap size when the obstacles changed position at the same moment that the target jumped (late), we used a one-tailed, one-sample 