Table 3. Mean movement parameters extracted from the movement tracker.

Action/Parameter (ms)	Movement onset	Movement duration	Angle preshaping
Orientation
Grasping	550	610	>176
Pointing	576	565	NA
Luminance
Grasping	517	566	>113
Pointing	513	525	NA

Movement onset times (ms) is the time between the go-cue (onset of the first bar) and the actual initiation of movement. Duration of movement (ms) is defined as the time between movement onset and movement offset (when the object on screen is grasped or pointed at). Angle preshaping time (ms) is the time point where a significant difference is observed in thumb-index angle between 45 and −45 degree target bars.