Movement time is defined as?

• A. From brain signal to movement onset.
• B. Begins at body movement and ends at completion of a task.
• C. Time from stimulus onset to movement end.
• D. From decision to move to movement initiation.

Answer: (B)

Movement time is the duration of the actual motor action itself—the time from when the movement begins (the limb starts to move) to when the movement ends (the limb comes to rest at the target or completes the action). It represents the physical time the body is in motion, separate from any thinking, planning, or perception that happened before movement began. For example, in a reach-to-grasp task, movement time is the interval from the moment the hand starts moving to the moment the hand stops at the object. This differs from total response time, which includes the time it takes to perceive the stimulus and decide to act, and from planning or initiation times, which involve preparing or starting the movement.