title: Change mechanisms in EMG biofeedback training: cognitive changes underlying improvements in tension headache.
mesh_terms: D000293:Adolescent; D001676:Biofeedback, Psychology / Q000502:physiology; D003071:Cognition; D004576:Electromyography; D005260:Female; D006261:Headache / Q000628:therapy*; D006801:Humans; D007389:Internal-External Control; D008297:Male