Answer:
Electromyogram (EMG)
Explanation:
EMG is a procedure used to record electric activity in a muscle. This procedure is done to diagnose carpal tunnel syndrome. Electromyography is an electrical recording of activity in a muscle.
stability that comes from the trunk and the spine
I believe you are talking about introverts, but I dont completely understand your question...
Because the brain sends messages for your muscles to move your arm through the nervous system.