title: Hearing level equalized otoacoustic emissions acquired by swept-tones: intensity characteristics.
abstract: Otoacoustic emissions (OAE), which are acoustic responses produced by the cochlea, can be recorded with a microphone in the ear canal to give diagnostic information regarding cochlear functioning. Recently, the researchers developed a novel stimulus for the acquisition of OAE using a hearing-level equalized (HL(eq)) swept-tone signal. The objective of this study was to observe OAE characteristics at a multitude of intensities to track the changes in temporal and spectral morphology. An increase in high-frequency emissions was found as stimulation intensity decreased. Furthermore, it was found that hearing level equalized swept-tone OAEs (HL(eq) sTEAOE) can be acquired at very low intensities, which is not typical under current acquisition modalities. This may result in clinical improvements by providing a fast and cheap method for contributing to the detection of auditory thresholds.
authors.affiliation: Department of Biomedical Engineering, University of Miami, Coral Gables, FL, USA. t.mihajloski@umiami.edu
authors.forename: Todor
authors.initials: T
authors.lastname: Mihajloski
authors.forename: Magdalena
authors.initials: M
authors.lastname: Lachowska
authors.forename: Christopher L
authors.initials: CL
authors.lastname: Bennett
authors.forename: Ozcan
authors.initials: O
authors.lastname: Ozdamar
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000328:Adult; D001301:Audiometry, Pure-Tone / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology*; D013018:Sound Spectrography / Q000379:methods*