Fig. 1.

Participant moving their user-controlled blue ball into the safe zone (green rectangle). A The participant starts in the center of the screen and distance is calculated as the distance from the participant’s location to the center of the safe zone. B An undershoot is counted when a participant begins moving and their acceleration drops below 0 before reaching the safe zone. C An overshoot is counted if the participant passes the safe zone by more than 30% of the blue ball diameter. D Success is counted if the participant moves 70% of their blue ball into safe zone for 200 ms within 3 s