During EMG biofeedback training, how should the device sensitivity be adjusted as the patient demonstrates an increase in muscle activity?

During EMG biofeedback training, how should the device sensitivity be adjusted as the patient demonstrates an increase in muscle activity?

• A. starts high and decreases as the patient shows an increase in muscle activity.
• B. starts low and increases as the patient shows an increase in muscle activity.
• C. remains at approximately mid-range during the entire treatment period.
• D. is not set, since this adjustment is not necessary for this form of biofeedback.

Answer: (A)

In EMG biofeedback, sensitivity is the threshold that determines when feedback is given. Start with higher sensitivity so even small muscle activations produce feedback, which helps the patient notice and learn the activation patterns early on. As the patient’s muscle activity increases, gradually reduce sensitivity (raise the threshold) so feedback occurs only with more substantial activation. This keeps the feedback meaningful, prevents overreaction to minor fluctuations, and progressively challenges the patient to sustain stronger, more consistent contractions.

In EMG biofeedback, sensitivity is the threshold that determines when feedback is given. Start with higher sensitivity so even small muscle activations produce feedback, which helps the patient notice and learn the activation patterns early on. As the patient’s muscle activity increases, gradually reduce sensitivity (raise the threshold) so feedback occurs only with more substantial activation. This keeps the feedback meaningful, prevents overreaction to minor fluctuations, and progressively challenges the patient to sustain stronger, more consistent contractions.