Sleep states in premature infants.
D004569:Electroencephalography; D004576:Electromyography; D004585:Electrooculography; D005133:Eye Movements; D006339:Heart Rate; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D009068:Movement; D012119:Respiration; D012890:Sleep / Q000502:physiology*