EEG AND AUTONOMIC RESPONSE PATTERN DURING WAKING AND SLEEP STAGES

摘要: The response hierarchy of EEG and autonomic variables to tones increasing intensity was studied during waking sleep stages 2, REM, SW (3 & 4 combined). Tones 1000 Hz (5 sec duration, 55 ISI) were presented 35 young adult male subjects. During waking, the began below awake auditory threshold increased by 5 db until a motor (button press) made. sleep, at went arousal threshold, i.e., and/or an change indicative arousal. Changes in EEG, finger pulse amplitude, heart rate, skin potential, resistance, respiration period measured for each stimulus compared pseudostimulus scored 25 prior actual stimulus. In state, statistically significant responses (p < .05) found pulse, rate early deceleration, resistance tone but not lesser levels. present 30–25 20–15 below, acceleration 20–5 below. Significant seen only threshold. Thus, contrast there clear stimuli definite ordering appearance various responses: preceded cardiovascular, with electrodermal occurring This order constant over stages. Arousal thresholds very similar across day sleepers (approximately above threshold). stage 2 night about 15 lower than that sleepers.