During treatment for chronic right‑sided neck pain, a patien…
During treatment for chronic right‑sided neck pain, a patient’s upper trapezius is visibly tight and guarded, limiting their ability to turn the head. The therapist applies high‑frequency electrical stimulation to the upper trapezius. Within a few minutes, the muscle begins to relax giving the patient pain relief. What is the most likely explanation for why this treatment worked?
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