Frontalis muscle tension and sleep latency.
D000328:Adult; D001007:Anxiety / Q000150:complications; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009129:Muscle Tonus; D010551:Personality; D011930:Reaction Time / Q000502:physiology*; D012535:Scalp / Q000502:physiology; D012890:Sleep / Q000502:physiology*