scholarly journals Comparison of Behavioral and Physiological Measures of the Status of the Cochlear Nonlinearity

2021 ◽  
Vol 25 ◽  
pp. 233121652110161
Author(s):  
Michal Fereczkowski ◽  
Torsten Dau ◽  
Ewen N. MacDonald
Keyword(s):  
Otoacoustic Emissions ◽  
Hearing Impaired ◽  
Good Correspondence ◽  
Cochlear Nonlinearity ◽  
Temporal Masking ◽  
The Status ◽  
Peripheral Compression ◽  
Two Measures ◽  
Peripheral Nonlinearity ◽  
Fitting In

While an audiogram is a useful method of characterizing hearing loss, it has been suggested that including a complementary, suprathreshold measure, for example, a measure of the status of the cochlear active mechanism, could lead to improved diagnostics and improved hearing-aid fitting in individual listeners. While several behavioral and physiological methods have been proposed to measure the cochlear-nonlinearity characteristics, evidence of a good correspondence between them is lacking, at least in the case of hearing-impaired listeners. If this lack of correspondence is due to, for example, limited reliability of one of such measures, it might be a reason for limited evidence of the benefit of measuring peripheral compression. The aim of this study was to investigate the relation between measures of the peripheral-nonlinearity status estimated using two psychoacoustical methods (based on the notched-noise and temporal-masking curve methods) and otoacoustic emissions, on a large sample of hearing-impaired listeners. While the relation between the estimates from the notched-noise and the otoacoustic emissions experiments was found to be stronger than predicted by the audiogram alone, the relations between the two measures and the temporal-masking based measure did not show the same pattern, that is, the variance shared by any of the two measures with the temporal-masking curve-based measure was also shared with the audiogram.

The Current Status of Hearing Care: Can We Change the Status Quo?

2005 ◽  
Vol 16 (07) ◽  
pp. 410-418 ◽  
Author(s):  
Dennis Van Vliet
Keyword(s):  
United States ◽  
Hearing Loss ◽  
Care Delivery ◽  
The United States ◽  
Status Quo ◽  
Hearing Impaired ◽  
Current Status ◽  
High Quality ◽  
Scientific Database ◽  
The Status

The members of the profession of audiology often express concern that the services and products that have been developed to provide benefit to the hearing impaired are not sought after or delivered to the majority of those diagnosed with hearing loss. A critical look at the status quo of hearing care delivery in the United States is needed to verify this assumption and to develop strategies to improve the situation. A key concern is the lack of a comprehensive high-quality scientific database upon which to build continuous improvements in the effectiveness of the services and products that are provided to the hearing impaired.

Faith as Taking the Risk

1968 ◽  
Vol 25 (2) ◽  
pp. 201-210 ◽  
Author(s):  
Wyatt T. Walker
Keyword(s):  
Status Quo ◽  
Prisoners Of War ◽  
The Future ◽  
The Status ◽  
Two Measures ◽  
The City

“Then Elisha said to those people who were assembled in the main square, in the midst of a terrible famine, with the Syrian army at the gate: ‘In about twenty-four hours you will be able to buy a measure of fine flour for a shekel and two measures of barley for a shekel.’ And the captain upon whose arm the king leaned looked at him and spoke in derision: ‘Ha! What's God going to do? Open up a hole in the sky and pour out food upon all of these hungry people?’ And Elisha turned to him and said: ‘You have a big mouth. You will see it with your own eyes, but you will not eat thereof.’ And there were four lepers sitting at the entering in of the gate of Samaria, and they held a conversation amongst themselves that had to do with what the future might hold for them. And they said one to another: ‘What good is it for us to sit here until we die? If we go into the city, there is a famine there, and we shall die. If we sit here, if we maintain the status quo, if we hold what we've got, we shall die also. Come on, let us go out to meet the Syrian hosts, let's try something that we never tried before, and perhaps we shall be taken prisoners of war, and, if so, at least we'll survive. And if not, what have we got to lose?’” (II Kings 7: 1–20; the “Walker” translation).

scholarly journals Predicting hearing loss from otoacoustic emissions using an artificial neural network

2002 ◽  
Vol 49 (1) ◽  
Author(s):  
Rouviere De Waal ◽  
René Hugo ◽  
Maggi Soer ◽  
Johann J. Krüger
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Otoacoustic Emissions ◽  
Back Propagation ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Distortion Product ◽  
Hearing Ability ◽  
Artificial Neural ◽  
Artificial Neural Network Ann

Normal and impaired pure tone thresholds (PTTs) were predicted from distortion product otoacoustic emissions (DP using a feed-forward artificial neural network (ANN) with a back-propagation training algorithm. The ANN used a present and absent DPOAEs from eight DP grams, (2fl -f2 = 406 - 4031 Hz) to predict PTTs at 0.5, 1, 2 and 4 kHz. With normal hearing as < 25 dB HL, prediction accuracy of normal hearing was 94% at 500, 88% at 1000, 88% at 2000 and 93% at 4000 Hz. Prediction of hearing-impaired categories was less accurate, due to insufficient data for the ANN to train on. This research indicates the possibility of accurately predicting hearing ability within 10 dB in normal hearing individuals and in hearing-impaired listeners with DPOAEs and ANNsfrom 500 - 4000 Hz.

Detection of Hearing Loss Using 2f2-f1 and 2f1-f2 Distortion-Product Otoacoustic Emissions

2005 ◽  
Vol 48 (5) ◽  
pp. 1165-1186 ◽  
Author(s):  
Tracy S. Fitzgerald ◽  
Beth A. Prieve
Keyword(s):  
Otoacoustic Emissions ◽  
Signal To Noise Ratio ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Distortion Product Otoacoustic Emissions ◽  
Signal To Noise ◽  
Primary Level ◽  
Distortion Product ◽  
Hearing Status ◽  
Stimulus Parameters

Although many distortion-product otoacoustic emissions (DPOAEs) may be measured in the ear canal in response to 2 pure tone stimuli, the majority of clinical studies have focused exclusively on the DPOAE at the frequency 2f1-f2. This study investigated another DPOAE, 2f2-f1, in an attempt to determine the following: (a) the optimal stimulus parameters for its clinical measurement and (b) its utility in differentiating between normal-hearing and hearing-impaired ears at low-to-mid frequencies (≤2000 Hz) when measured either alone or in conjunction with the 2f1-f2 DPOAE. Two experiments were conducted. In Experiment 1, the effects of primary level, level separation, and frequency separation (f2/f1) on 2f2-f1 DPOAE level were evaluated in normal-hearing ears for low-to-mid f2 frequencies (700–2000 Hz). Moderately high-level primaries (60–70 dB SPL) presented at equal levels or with f2 slightly higher than f1 produced the highest 2f2-f1 DPOAE levels. When the f2/f1 ratio that produced the highest 2f2-f1 DPOAE levels was examined across participants, the mean optimal f2/f1 ratio across f2 frequencies and primary level separations was 1.08. In Experiment 2, the accuracy with which DPOAE level or signal-to-noise ratio identified hearing status at the f2 frequency as normal or impaired was evaluated using clinical decision analysis. The 2f2-f1 and 2f1-f2 DPOAEs were measured from both normal-hearing and hearing-impaired ears using 2 sets of stimulus parameters: (a) the traditional parameters for measuring the 2f1-f2 DPOAE (f2/f1 = 1.22; L1, L2 = 65, 55 dB SPL) and (b) the new parameters that were deemed optimal for the 2f2-f1 DPOAE in Experiment 1 (f2/f1 = 1.073, L1 and L2 = 65 dB SPL). Identification of hearing status using 2f2-f1 DPOAE level and signal-to-noise ratio was more accurate when the new stimulus parameters were used compared with the results achieved when the 2f2-f1 DPOAE was recorded using the traditional parameters. However, identification of hearing status was less accurate for the 2f2-f1 DPOAE measured using the new parameters than for the 2f1-f2 DPOAE measured using the traditional parameters. No statistically significant improvements in test performance were achieved when the information from the 2 DPOAEs was combined, either by summing the DPOAE levels or by using logistic regression analysis.

Audiological and electrocochleography findings in hearing-impaired children with connexin 26 mutations and otoacoustic emissions

2007 ◽  
Vol 265 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Rosamaria Santarelli ◽  
Elona Cama ◽  
Pietro Scimemi ◽  
Erica Dal Monte ◽  
Elisabetta Genovese ◽  
...  
Keyword(s):  
Otoacoustic Emissions ◽  
Hearing Impaired ◽  
Connexin 26 ◽  
Impaired Children ◽  
Hearing Impaired Children

Managing the positioning of auditory impaired people within an organization

2018 ◽  
Vol 565 (10) ◽  
pp. 9-11
Author(s):  
Janusz Rymaniak ◽  
Katarzyna Lis ◽  
Eunika Lech
Keyword(s):  
Labour Market ◽  
Hearing Impaired ◽  
Theory And Practice ◽  
Occupational Activity ◽  
Organizational Practice ◽  
Impaired People ◽  
The Status ◽  
Survey Results

Globalization and the ageing of population result in seeking extended occupational activity of groups inactive in the labour market, e.g., hearing-impaired people. This article discusses the theory as well as survey results, which show the status and forms of positioning of hearing-impaired employees within an organization. It also identifies major flaws in the theory, the different status and opinions in organizational practice, and recommendations in terms of theory and practice.

Babbling Development of Hearing-Impaired and Normally Hearing Subjects

1986 ◽  
Vol 51 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Carol Stoel-Gammon ◽  
Kiyoshi Otomo
Keyword(s):  
Longitudinal Data ◽  
Hearing Impaired ◽  
General Tendency ◽  
Qualitative And Quantitative ◽  
Two Measures ◽  
Age Range ◽  
Impaired Children ◽  
Over Time ◽  
Hearing Impaired Children

Phonetic transcriptions of babbling samples from 11 normally hearing subjects, age 4–18 months, were compared with samples from 11 hearing-impaired subjects, age 4–28 months. Longitudinal data were available for all hearing babies and for 8 of the 11 hearing-impaired subjects. The analysis focused on two measures: (a) size of consonantal repertoire over time and (b) proportional occurrence of multisyllabic consonant-vowel utterances. On average, the normally hearing subjects evidenced an increase in size of their consonantal repertoires with age; in contrast, the hearing-impaired subjects in the same age range had smaller repertoires that decreased over time. Comparison of multisyllabic utterances revealed a general tendency for the hearing-impaired subjects to produce fewer multisyllabic utterances containing true consonants and for some of the hearing-impaired children to produce a high proportion of vocalizations with glides or glottal stops. These findings suggest both qualitative and quantitative differences in the babbling of the two groups.

scholarly journals Relationship between Distortion Product Otoacoustic Emissions and Pure Tone Thresholds in Normal and Hearing-impaired Ears.

1997 ◽  
Vol 100 (4) ◽  
pp. 436-443 ◽  
Author(s):  
Eiji Chida ◽  
Nobukiyo Satoh ◽  
Mitsugu Kawanami ◽  
Masaaki Kashiwamura ◽  
Tohru Sakamoto ◽  
...  
Keyword(s):  
Otoacoustic Emissions ◽  
Pure Tone ◽  
Hearing Impaired ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product
Sign in / Sign up

Export Citation Format

Share Document