Unilateral Below-the-Elbow - Testing and training for Myo-Electric hand.

1. Surface electrodes are placed over the muscles of the forearm which normally control wrist flexion and extension.
2. Myo-electric signals from the wrist flexor muscles are used to close the hand and to internally rotate the wrist.
3. Myo-electric signals from the wrist extensors are used to open the hand and externally rotate the wrist.
4. In testing, a computer is used to check signals and adjust the amplification to optimize control functions.

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