HIGH-FREQUENCY DISTORTION PRODUCT OTOACOUSTIC EMISSIONS MEASURED BY TWO SYSTEMS: AN EXAMPLE OF A SUBJECT WITH NORMAL HEARING
Journal Title: Journal of Hearing Science - Year 2016, Vol 6, Issue 4
Abstract
Background: Distortion product otoacoustic emissions (DPOAEs) are most commonly measured up to 6 kHz. However, there are now systems available that can measure DPOAEs up to 16 kHz. The purpose of this study was to compare two such systems. Case report: One subject with hearing thresholds below 20 dB HL at frequencies from 0.125 to 16 kHz was used to compare DPOAEs measured by the two systems. The HearID+DP (Mimosa Acoustics) and SmartDPOAE (Intelligent Hearing Systems) were used. DPOAEs were measured at frequencies from 0.5 to 16 kHz. Short-time repeatability was assessed by comparing DPOAE amplitudes between two measurements, with the second measurement made after refitting the probe. DPOAEs were above the noise for all tested frequencies. Comparison of results from the two systems showed that the differences between consecutive measurements and between the two systems was lowest in the 1–8 kHz range and highest in the 9–16 kHz range. However, even in the 1–8 kHz range, differences between response levels averaged 4 dB. Conclusions: Both systems provided DPOAE levels that were consistent with normal hearing thresholds. However, the differences between the two systems were quite high and may be too large to detect small changes in cochlear status if different equipment is used.
Authors and Affiliations
Edyta Pilka, W. Wiktor Jedrzejczak, Lukasz Olszewski, Henryk Skarzynski
Keywords
Related Articles
- EP ID EP376708
- DOI 10.17430/902984
- Views 74
- Downloads 0
MISMATCH NEGATIVITY AND THE N2B COMPONENT ELICITED BY PURE TONES AND SPEECH SOUNDS IN ANOMIC APHASIA: A CASE STUDY
Background: The auditory processing impairments frequently observed in aphasia are being slowly clarified by using eventrelated potentials (ERPs), a method that allows brain processes to be observed at high temporal reso...
POSTLINGUAL SENSORINEURAL HEARING LOSS DUE TO A VERY RARE COCH PATHOGENIC VARIANT
Background: The COCH gene encoding cochlin is highly expressed in the inner ear but the exact physiological function of the protein still remains unknown. Pathogenic variants located in COCH cause autosomal dominant hear...
SHORT-TERM REPEATABILITY OF CONTRALATERAL SUPPRESSION OF TRANSIENTLY EVOKED OTOACOUSTIC EMISSIONS PRELIMINARY RESULTS
Background: The effect of suppression of otoacoustic emissions (OAEs) by contralateral acoustic stimulation (CAS) is very small, on the level of 1–2 dB. At the same time, OAEs are known to have quite high variability acr...
13TH CONGRESS OF THE EUROPEAN FEDERATION OF AUDIOLOGY SOCIETIES, JUNE 7–10, 2017, INTERLAKEN, SWITZERLAND
In this special issue of the “Journal of Hearing Science”, you will find the abstracts of all the oral presentations, poster presentations, structured sessions, workshops, and keynote lectures of the 13th Congress of the...
REPORT ON THE 43RD AMERICAN AUDITORY SOCIETY SCIENTIFIC AND TECHNOLOGY MEETING, 3–5 MARCH 2016, SCOTTSDALE, AZ, USA
The 2016 American Auditory Society (AAS) Scientific and Technology Meeting took place at Scottsdale, Arizona, USA on 3–5 March 2016. The conference was opened by Harvey Abrams (AAS President) and Beth Prieve (President-E...