Otoacoustic emission

Assessment of transient evoked otoacoustic emissions (TEOAE) in an adult

An otoacoustic emission (OAE) is a sound that is generated from within the inner ear. Having been predicted by Austrian astrophysicist Thomas Gold in 1948, its existence was first demonstrated experimentally by British physicist David Kemp in 1978,[1] and otoacoustic emissions have since been shown to arise through a number of different cellular and mechanical causes within the inner ear.[2][3] Studies have shown that OAEs disappear after the inner ear has been damaged, so OAEs are often used in the laboratory and the clinic as a measure of inner ear health.

Broadly speaking, there are two types of otoacoustic emissions: spontaneous otoacoustic emissions (SOAEs), which occur without external stimulation, and evoked otoacoustic emissions (EOAEs), which require an evoking stimulus.

  1. ^ Kemp, D. T. (1 January 1978). "Stimulated acoustic emissions from within the human auditory system". The Journal of the Acoustical Society of America. 64 (5): 1386–1391. Bibcode:1978ASAJ...64.1386K. doi:10.1121/1.382104. PMID 744838.
  2. ^ Kujawa, SG; Fallon, M; Skellett, RA; Bobbin, RP (August 1996). "Time-varying alterations in the f2-f1 DPOAE response to continuous primary stimulation. II. Influence of local calcium-dependent mechanisms". Hearing Research. 97 (1–2): 153–64. doi:10.1016/s0378-5955(96)80016-5. PMID 8844195. S2CID 4765615.
  3. ^ Chang, Kay W.; Norton, Susan (1 September 1997). "Efferently mediated changes in the quadratic distortion product (f2−f1)". The Journal of the Acoustical Society of America. 102 (3): 1719. Bibcode:1997ASAJ..102.1719C. doi:10.1121/1.420082.