An electromyographic study of social facilitation: a test of the 'mere presence' hypothesis.
D000161:Acoustic Stimulation; D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D001143:Arousal; D001307:Auditory Perception; D004328:Drive; D004576:Electromyography; D005152:Facial Muscles / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008960:Models, Psychological; D009129:Muscle Tonus; D012063:Relaxation; D012932:Social Facilitation; D013637:Tape Recording