Comparison of Distortion Product Otoacoustic Emission Amplitude between Normal Hearing Male and Female Subjects

2014 ◽  
Vol 21 (1) ◽  
pp. 6-10
Author(s):  
Shawkt Al-Tamimi ◽  
Mefleh Alsarhan ◽  
Hussein Alqasem
Keyword(s):  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Distortion Product Otoacoustic Emission ◽  
Male And Female ◽  
Distortion Product ◽  
Female Subjects

scholarly journals Characteristics of the 2f1-f2 distortion product otoacoustic emission in a normal hearing population

2014 ◽  
Vol 135 (1) ◽  
pp. 287-299 ◽  
Author(s):  
Gayla L. Poling ◽  
Jonathan H. Siegel ◽  
Jungmee Lee ◽  
Jungwha Lee ◽  
Sumitrajit Dhar
Keyword(s):  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Distortion Product Otoacoustic Emission ◽  
Distortion Product

Distortion product otoacoustic emissions following stapedectomy versus stapedotomy

2009 ◽  
Vol 124 (1) ◽  
pp. 16-18
Author(s):  
L Migirov ◽  
M Wolf
Keyword(s):  
Otoacoustic Emissions ◽  
Surgical Techniques ◽  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Stapes Surgery ◽  
Distortion Product Otoacoustic Emissions ◽  
Control Group ◽  
Distortion Product Otoacoustic Emission ◽  
Distortion Product ◽  
Gap Closure

AbstractObjectives:To evaluate distortion product otoacoustic emissions following stapes surgery in patients with otosclerosis, and to compare in this respect two surgical techniques used in our department.Method:This retrospective study included 17 stapedectomy and 23 stapedotomy patients aged 16–68 years who had been followed up for at least 12 months. Distortion product otoacoustic emission results at 2, 3, 4 and 5 kHz (i.e. =f2, with 2f1 − f2 = 0.6f2) were obtained pre-operatively and four weeks post-operatively. The control group included 13 volunteers aged 18–50 years with normal hearing and normal otoscopic findings.Results:Distortion product otoacoustic emissions were detected pre-operatively in 34.8 per cent of stapedotomy patients and 29.4 per cent of stapedectomy patients, and post-operatively in 91.3 per cent of stapedotomy patients and 88.2 per cent of stapedectomy patients. The differences between the stapedotomy and stapedectomy groups were statistically insignificant for each tested frequency, both pre- and post-operatively. The patients' post-operative distortion product otoacoustic emission amplitudes were less than those of normal hearing individuals, even in patients with complete air–bone gap closure and a significant improvement in hearing.Conclusion:Distortion product otoacoustic emissions were detected in most of our patients following successful stapes surgery, and appeared to be unaffected by the surgical technique or prosthesis used.

scholarly journals Relation of distortion product otoacoustic emission and tinnitus in normal hearing patients: A pilot study

2014 ◽  
Vol 16 (69) ◽  
pp. 69 ◽  
Author(s):  
Noorain Alam ◽  
Anil Jain ◽  
Datt Modh ◽  
Pankaj Shah ◽  
Ashish Katarkar
Keyword(s):  
Pilot Study ◽  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Distortion Product Otoacoustic Emission ◽  
Distortion Product

Modeling DPOAE Input/Output Function Compression: Comparisons with Hearing Thresholds

2014 ◽  
Vol 25 (08) ◽  
pp. 746-759 ◽  
Author(s):  
Shaum P. Bhagat
Keyword(s):  
Research Design ◽  
Basilar Membrane ◽  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Membrane Mechanics ◽  
Distortion Product Otoacoustic Emission ◽  
Input Output ◽  
Distortion Product ◽  
Hearing Thresholds ◽  
Cochlear Compression

Background: Basilar membrane input/output (I/O) functions in mammalian animal models are characterized by linear and compressed segments when measured near the location corresponding to the characteristic frequency. A method of studying basilar membrane compression indirectly in humans involves measuring distortion-product otoacoustic emission (DPOAE) I/O functions. Previous research has linked compression estimates from behavioral growth-of-masking functions to hearing thresholds. Purpose: The aim of this study was to compare compression estimates from DPOAE I/O functions and hearing thresholds at 1 and 2 kHz. Research Design: A prospective correlational research design was performed. The relationship between DPOAE I/O function compression estimates and hearing thresholds was evaluated with Pearson product-moment correlations. Study Sample: Normal-hearing adults (n = 16) aged 22–42 yr were recruited. Data Collection and Analysis: DPOAE I/O functions (L 2 = 45–70 dB SPL) and two-interval forced-choice hearing thresholds were measured in normal-hearing adults. A three-segment linear regression model applied to DPOAE I/O functions supplied estimates of compression thresholds, defined as breakpoints between linear and compressed segments and the slopes of the compressed segments. Pearson product-moment correlations between DPOAE compression estimates and hearing thresholds were evaluated. Results: A high correlation between DPOAE compression thresholds and hearing thresholds was observed at 2 kHz, but not at 1 kHz. Compression slopes also correlated highly with hearing thresholds only at 2 kHz. Conclusions: The derivation of cochlear compression estimates from DPOAE I/O functions provides a means to characterize basilar membrane mechanics in humans and elucidates the role of compression in tone detection in the 1–2 kHz frequency range.

Clinical characteristics and audiological significance of spontaneous otoacoustic emissions in tinnitus patients with normal hearing

2010 ◽  
Vol 125 (3) ◽  
pp. 246-250 ◽  
Author(s):  
D-K Kim ◽  
S-N Park ◽  
K-H Park ◽  
H G Choi ◽  
E-J Jeon ◽  
...  
Keyword(s):  
Otoacoustic Emissions ◽  
Early Stage ◽  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Control Group ◽  
Study Group ◽  
Distortion Product Otoacoustic Emission ◽  
Spontaneous Otoacoustic Emissions ◽  
Distortion Product ◽  
The Mean

AbstractObjective:To define the clinical and audiological features of normal-hearing tinnitus patients with spontaneous otoacoustic emissions, and to evaluate the role of spontaneous otoacoustic emissions in tinnitus generation.Materials and methods:Thirty-two patients with spontaneous otoacoustic emissions were compared with 29 patients without spontaneous otoacoustic emissions, regarding clinical and audiological aspects.Results:The mean age of the study group subjects was significantly lower, and they experienced the kindling effect less frequently than the control group. The mean tinnitus handicap inventory score of the study group was considerably higher than that of the controls, although the difference was not statistically significant. The study group had significantly quieter tinnitus, and higher transient evoked and distortion product otoacoustic emission responses, compared with the control group.Conclusions:Normal-hearing tinnitus patients with spontaneous otoacoustic emissions have different clinical and audiological characteristics, compared with those without spontaneous otoacoustic emissions. Appropriate evaluation and treatment should be considered at an early stage in these patients.

scholarly journals Distortion-product otoacoustic emission input/output characteristics in normal-hearing and hearing-impaired human ears

2009 ◽  
Vol 126 (2) ◽  
pp. 728-738 ◽  
Author(s):  
Stephen T. Neely ◽  
Tiffany A. Johnson ◽  
Judy Kopun ◽  
Darcia M. Dierking ◽  
Michael P. Gorga
Keyword(s):  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Distortion Product Otoacoustic Emission ◽  
Input Output ◽  
Distortion Product ◽  
Output Characteristics
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