Test-retest reliability of distortion product otoacoustic emissions in the high frequency range

2002 ◽  
Author(s):  
Hoi-yee, Iris Ng
Keyword(s):  
High Frequency ◽  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
High Frequency Range ◽  
Frequency Range ◽  
Retest Reliability ◽  
Distortion Product ◽  
Test Retest Reliability

Early Changes in Auditory Function As a Result of Platinum Chemotherapy: Use of Extended High-Frequency Audiometry and Evoked Distortion Product Otoacoustic Emissions

2007 ◽  
Vol 25 (10) ◽  
pp. 1190-1195 ◽  
Author(s):  
Kristin R. Knight ◽  
Dale F. Kraemer ◽  
Christiane Winter ◽  
Edward A. Neuwelt
Keyword(s):  
High Frequency ◽  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Auditory Function ◽  
Cochlear Function ◽  
Serial Measurement ◽  
Distortion Product ◽  
High Frequency Audiometry ◽  
Platinum Based Chemotherapy ◽  
Platinum Chemotherapy

Purpose The objective is to describe progressive changes in hearing and cochlear function in children and adolescents treated with platinum-based chemotherapy and to begin preliminary evaluation of the feasibility of extended high-frequency audiometry and distortion product otoacoustic emissions for ototoxicity monitoring in children. Patients and Methods Baseline and serial measurement of conventional pure-tone audiometry (0.5 to 8 kHz) and evoked distortion product otoacoustic emissions (DPOAEs) were conducted for 32 patients age 8 months to 20 years who were treated with cisplatin and/or carboplatin chemotherapy. Seventeen children also had baseline and serial measurement of extended high-frequency (EHF) audiometry (9 to 16 kHz). Audiologic data were analyzed to determine the incidence of ototoxicity using the American Speech-Language-Hearing Association criteria, and the relationships between the different measures of ototoxicity. Results Of the 32 children, 20 (62.5%) acquired bilateral ototoxicity in the conventional frequency range during chemotherapy treatment, and 26 (81.3%) had bilateral decreases in DPOAE amplitudes and dynamic range. Of the 17 children with EHF audiometry results, 16 (94.1%) had bilateral ototoxicity in the EHF range. Pilot data suggest that EHF thresholds and DPOAEs show ototoxic changes before hearing loss is detected by conventional audiometry. Conclusion EHF audiometry and DPOAEs have the potential to reveal earlier changes in auditory function than conventional frequency audiometry during platinum chemotherapy in children.

scholarly journals Relationship Between Distortion Product – Otoacoustic Emissions (DPOAEs) and High-Frequency Acoustic Immittance Measures

2016 ◽  
Vol 22 ◽  
pp. 2028-2034 ◽  
Author(s):  
Ualace De Paula Campos ◽  
Stavros Hatzopoulos ◽  
Lech K. Śliwa ◽  
Piotr H. Skarżyński ◽  
Wiesław W. Jędrzejczak ◽  
...  
Keyword(s):  
High Frequency ◽  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product

scholarly journals Frequency matching of vocalizations to inner-ear sensitivity along an altitudinal gradient in the coqui frog

2009 ◽  
Vol 6 (2) ◽  
pp. 278-281 ◽  
Author(s):  
Sebastiaan W. F. Meenderink ◽  
Mirja Kits ◽  
Peter M. Narins
Keyword(s):  
Body Size ◽  
Inner Ear ◽  
Sea Level ◽  
Otoacoustic Emissions ◽  
Altitudinal Gradient ◽  
Distortion Product Otoacoustic Emissions ◽  
Frequency Range ◽  
Frequency Matching ◽  
Distortion Product ◽  
Sensitivity Change

Acoustic communication involves both the generation and the detection of a signal. In the coqui frog ( Eleutherodactylus coqui ), it is known that the spectral contents of its calls systematically change with altitude above sea level. Here, distortion product otoacoustic emissions are used to assess the frequency range over which the inner ear is sensitive. It is found that both the spectral contents of the calls and the inner-ear sensitivity change in a similar fashion along an altitudinal gradient. As a result, the call frequencies and the auditory tuning are closely matched at all altitudes. We suggest that the animal's body size determines the frequency particulars of the call apparatus and the inner ear.

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