title: EMG biofeedback and tension headache: a controlled outcome study.
mesh_terms: D000328:Adult; D003216:Conditioning, Operant; D004576:Electromyography; D005246:Feedback; D005260:Female; D006261:Headache / Q000628:therapy*; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology; D009333:Neck / Q000502:physiology; D011214:Practice, Psychological; D012063:Relaxation; D012535:Scalp / Q000502:physiology