title: Functional maturation of the medial efferent olivocochlear system in human neonates.
abstract: The effect of contralateral acoustic stimulation on transient evoked otoacoustic emissions (TEOAE) was used to investigate the functional maturity of the medial efferent olivocochlear system in full term neonates and a 6-week-old baby. The technique used was to record the TEOAE alternately with and without contralateral noise. The result was a reduction in TEOAE amplitude and latency. This was best illustrated with a difference waveform obtained from the subtraction of the TEOAE waveform recorded with contralateral noise, from the waveform recorded without contralateral noise. All the full term neonates and also the 6-week-old baby showed significant effects indicating functional maturity of the medial olivocochlear system.
authors: Audiology Department, Institute of Laryngology, London, UK.
authors: S
authors: S
authors: Ryan
authors: J P
authors: JP
authors: Piron
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D003056:Cochlear Nerve / Q000502:physiology*; D004525:Efferent Pathways / Q000502:physiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009622:Noise; D009847:Olivary Nucleus / Q000502:physiology*; D009925:Organ of Corti / Q000502:physiology*; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology; D011897:Random Allocation; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values