Brainstem electrical response audiometry.
D001300:Audiometry, Evoked Response; D001309:Auditory Threshold / Q000502:physiology; D001933:Brain Stem / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D006801:Humans; D012890:Sleep / Q000502:physiology; D014851:Wakefulness / Q000502:physiology