Distortion product otoacoustic emissions and clinical significance of primary stimulus levels
Orhan ÖZTURAN*, M.D., James JERGER**, Ph.D.
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Abstract
Otoacoustic emissions arc emitted acoustic energies J'rom the cochlea to the external car cunal vhich can be recorded by a sensitive microphone. It has heen ohserved that this acoustic energy stems J'rom the micromechanical activity of the oııter hair ce/ls. Distortion product otoacoustic emissions can he detected in ali normally hearing subjects hy presenting t
o different Jrequencies and evoking a third different frequency. After a brief revie
ahout otoacoustic emissions. a study uas presented vhich perj'ormed in 20 healtlıy subjects concerning different primary stimulus levels to elicit maximum distortion product otoacoustic emissions. /Journal of Turgut (hal Jedical Çenter 2(l):22-2~. 19951
Key Words : Otoacoustic emission. distortion product otoacoustic enııssion
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