title: Control of states of consciousness. II. Attainment through external feedback augmenting control of psychophysiological variables.
mesh_terms: D000222:Adaptation, Physiological; D003243:Consciousness; D004569:Electroencephalography; D004576:Electromyography; D004777:Environment; D005246:Feedback; D005712:Galvanic Skin Response; D006801:Humans; D007721:Knowledge of Results, Psychological; D009129:Muscle Tonus; D011603:Psychophysiology; D011613:Psychotherapy; D012063:Relaxation