title: Diurnal cycle for spontaneous oto-acoustic emission frequency.
abstract: Spontaneous oto-acoustic emission frequency was measured in two subjects at different times on the same day. A statistically significant frequency decrease during the morning hours was observed for both subjects. Possible mechanisms (ear canal pressure, body temperature, androgen level) for this decrease are discussed.
mesh_terms: D000328:Adult; D001831:Body Temperature; D002940:Circadian Rhythm; D003055:Cochlear Microphonic Potentials; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D008297:Male