scholarly journals Pure tone hearing thresholds and leisure noise: Is there a relationship?

2015 ◽  
Vol 17 (78) ◽  
pp. 358 ◽  
Author(s):  
Warwick Williams ◽  
Lyndal Carter ◽  
Mark Seeto
Keyword(s):  
Pure Tone ◽  
Hearing Thresholds

scholarly journals Hearing Thresholds of Nigerian Navy Personnel Serving in Lagos Area

2021 ◽  
Author(s):  
Abubakar O Aliyu ◽  
Waheed A Adedeji ◽  
Adekunle Daniel ◽  
Tajudeen Yusuf ◽  
Paul A Onakoya ◽  
...  
Keyword(s):  
Hearing Impairment ◽  
Pure Tone ◽  
Past History ◽  
Pure Tone Audiometry ◽  
Work Place ◽  
Cross Sectional ◽  
Pure Tone Average ◽  
Hearing Thresholds ◽  
The Right ◽  
Navy Personnel

Abstract Introduction: Navy personnel are exposed to several risk factors that increase hearing thresholds and impair hearing. The aim of the study was to determine the prevalence of hearing impairment among Nigerian Navy personnel. Materials and Method: This was a cross sectional study of Nigerian Navy personnel working in various ships. Structured, self-administered questionnaire was used to obtain information on hearing. All the subjects had ear examination and pure tone audiometry of both ears. Results: The prevalence of hearing impairment was 22(14.7%) in the right and 17(11.3%) in the left ears. The Pure Tone Average for the right and left ear were 19.0±8.6dB and 17.4±6.7dB respectively. There was a statistically significant association between noisy work place and total hearing loss (p<.01), pure tone average in the left ear (p<.05) and frequencies of 3000 Hz (p<.05), 2000 Hz (p<.001) and 1000Hz (p<.05) in the left ear. The association between past history of ear infections and pure tone average in the left ear (p<.05) and the frequency 2000 Hz (p<.005) in the left ear were significant. The length of service years, occupational group, age, sex report of change in hearing, non-use of hearing protection and presence of tinnitus did not show significant association with pure tone averages nor on the frequencies tested. Conclusion: The significant unilateral hearing impairment on the right ear suggests the need for more research on hearing impairment in the Nigerian Navy as well as development of a comprehensive hearing conservation programme.

Predicting Speech Recognition Thresholds from Pure Tone Hearing Thresholds

1994 ◽  
Vol 79 (2) ◽  
pp. 1003-1008 ◽  
Author(s):  
Stanley Coren ◽  
A. Ralph Hakstian
Keyword(s):  
Speech Recognition ◽  
Pure Tone ◽  
Recognition Threshold ◽  
Simple Computation ◽  
Average Correlation ◽  
Hearing Sensitivity ◽  
Hearing Status ◽  
Hearing Thresholds

Hearing sensitivity is most commonly still reported in terms of pure tone thresholds. Unfortunately, simple procedures for predicting Speech Recognition Thresholds from Pure Tone Thresholds are not currently available. To remedy this problem, pure tone thresholds were collected from 802 individuals over the range of 250 to 8000 Hz. Five subsets of pure tone thresholds which are commonly used to report hearing status were then considered. An average correlation of 0.878 was found between the various pure tone indexes and the speech recognition threshold. Using regressions between pure tone and the speech measure, a table was constructed that allows conversion of the various pure tone indexes to a predicted speech recognition threshold and involves only a very simple computation.

Evaluation of Hearing and Balance Functions of Patients with Sickle Cell Anemia

2018 ◽  
Vol 23 (2) ◽  
pp. 122-125 ◽  
Author(s):  
Elif Tugba Sarac ◽  
Bilgehan Boke ◽  
Semsettin Okuyucu
Keyword(s):  
Hearing Loss ◽  
Sickle Cell ◽  
Sickle Cell Anemia ◽  
Pure Tone ◽  
Mixed Type ◽  
Normal Hearing ◽  
Spontaneous Nystagmus ◽  
Control Group ◽  
Hearing Thresholds ◽  
Significant Difference

Introduction: Sickle cell anemia is a disease characterized by a wide vaso-occlusive incident from micro-vascular incident to muscularactivity. The cochlear function can also get affected by this vaso-occlusion. Objective: It is aimed at determining what kind of effects sickle cell anemia has on hearing and balance system. Methods: This study has been conducted on 46 patients with sickle cell anemia and 45 healthy individuals. For all participants, their pure tone hearing thresholds and videonystagmography (VNG) findings have been determined in 17 frequencies between 125–16.000 Hz. Results: All hearing thresholds between 125 and 16,000 Hz, pure tone averages of patients with sickle cell anemia have been found statistically significant to be higher than the corresponding values in the control group(p < 0.05). The normal hearing rate of patients with sickle cell anemia has been determined to be 71.1% conductive hearing loss (CHL) to be 4.4%, sensorineural hearing loss (SNHL) to be 22.2%, and mixed type hearing loss to be 2.2% in right ear; the normal hearing rate has been determined to be 71.1%, CHL to be 2.2%, SNHL to be 22.2%, and mixed type hearing loss to be 4.4% in left ear. Statistically significant difference has not been found between head shake, spontaneous nystagmus, optokinetic, tracking test batteries, static and dynamic positional tests used in VNG, saccade accuracy and saccade peak velocity, which are saccadic test findings of 2 groups. However, saccadic latency, which is a saccadic test finding, has been determined to be longer in patients with sickle cell anemia in comparison to the control group. Conclusion: While sickle cell anemia causes hearing deficits, it does not have any effect on the central or peripheral vestibular system.

Self-Reported Hearing Problems among Older Adults: Prevalence and Comparison to Measured Hearing Impairment

2011 ◽  
Vol 22 (08) ◽  
pp. 550-559 ◽  
Author(s):  
Samuli Hannula ◽  
Risto Bloigu ◽  
Kari Majamaa ◽  
Martti Sorri ◽  
Elina Mäki-Torkko
Keyword(s):  
Older Adults ◽  
Hearing Impairment ◽  
Pure Tone ◽  
Pure Tone Audiometry ◽  
Population Based ◽  
Single Frequency ◽  
Hearing Level ◽  
Hearing Thresholds ◽  
Hearing Difficulties ◽  
Hearing Problems

Background: There are not many population-based epidemiological studies on the association between self-reported hearing problems and measured hearing thresholds in older adults. Previous studies have shown that the relationship between self-reported hearing difficulties and measured hearing thresholds is unclear and, according to our knowledge, there are no previous population-based studies reporting hearing thresholds among subjects with hyperacusis. Purpose: The aim was to investigate the prevalence of self-reported hearing problems, that is, hearing difficulties, difficulties in following a conversation in noise, tinnitus, and hyperacusis, and to compare the results with measured hearing thresholds in older adults. Research Design: Cross-sectional, population-based, and unscreened. Study Sample: Random sample of subjects (n = 850) aged 54-66 yr living in the city of Oulu (Finland) and the surrounding areas. Data Collection and Analysis: Otological examination, pure tone audiometry, questionnaire survey Results: The prevalence of self-reported hearing problems was 37.1% for hearing difficulties, 43.3% for difficulties in following a conversation in noise, 29.2% for tinnitus, and 17.2% for hyperacusis. More than half of the subjects had no hearing impairment, or HI (BEHL[better ear hearing level]0.5–4 kHz < 20 dB HL) even though they reported hearing problems. Subjects with self-reported hearing problems, including tinnitus and hyperacusis, had significantly poorer hearing thresholds than those who did not report hearing problems. Self-reported hearing difficulties predicted hearing impairment in the pure-tone average at 4, 6, and 8 kHz, and at the single frequency of 4 kHz. Conclusions: The results indicate that self-reported hearing difficulties are more frequent than hearing impairment defined by audiometric measurement. Furthermore, self-reported hearing difficulties seem to predict hearing impairment at high frequencies (4–8 kHz) rather than at the frequencies of 0.5–4 kHz, which are commonly used to define the degree of hearing impairment in medical and legal issues.

Delayed loss of residual hearing in Clarion® cochlear implant users

2003 ◽  
Vol 117 (11) ◽  
pp. 850-853 ◽  
Author(s):  
M. Barbara ◽  
A. Mattioni ◽  
S. Monini ◽  
I. Chiappini ◽  
F. Ronchetti ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Cochlear Implantation ◽  
Pure Tone ◽  
Hearing Threshold ◽  
Auditory Threshold ◽  
Residual Hearing ◽  
Equal Distribution ◽  
Hearing Thresholds ◽  
Number Of Patients ◽  
Over Time

Hearing threshold has been measured in a group of patients following cochlear implantation with a Clarion® device for the last eight years. The patients had received either a pre-curved carrier or the Hi-Focus I plus Electrode Positioner System (EPS). The assessment was carried out within the first post-operative week as well as at a later stage, between six and 87 months, post-operatively. Residual hearing thresholds were still measurable early after surgery in 24.5 per cent of the patients, without differences between the two different Clarion® models. However, the number of subjects with measurable hearing dropped to 16.3 per cent as observed when hearing was measured at a later stage, with an equal distribution between the two groups of patients. From this study it has been possible to observe that only a limited number of patients maintain residual hearing after Clarion® cochlear implantation, and that this tends to decrease further over time. Nevertheless, the performance of these patients for speech tests did not appear to be affected by deterioration of the pure-tone auditory threshold.

scholarly journals Η συμβολή των ωτοακουστικών εκπομπών στη μελέτη της κοχλιακής λειτουργίας σε ασθενείς με υποθυρεοειδισμό

2013 ◽  
Author(s):  
Βασίλειος Ψαλτάκος
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Otoacoustic Emissions ◽  
Pure Tone ◽  
Pure Tone Audiometry ◽  
Otoacoustic Emission ◽  
Upper Respiratory Tract ◽  
Anatomic Site ◽  
Cochlear Function ◽  
Hearing Thresholds

Although several reports exist concerning the occurrence of hearing loss in patients withdisorders of thyroid function, there are still several unsettled issues, such as theincidence and the severity of hearing impairment, the anatomic site of the auditorypathway involved, and the possible pathogenetic mechanisms. Both congenitalhypothyroidism and environmentally based iodine deficiency are established causes ofhearing loss in humans and rodents. Congenital thyroid deficiency in humans can resultin a profound, hearing deficit, which may be prevented by early hormonal replacementtreatment in infants with hypothyroidism. However, the effect of acute or chronichypothyroidism in adults has not been adequately studied, and most information hasbeen obtained from animal experiments, whereas research in humans has been basicallybased on behavioral audiometry. The use of otoacoustic emissions may provide moreinsight into the hearing function of these patients than pure-tone audiometry, since it isconsidered as a sensitive test of the cochlear status. The aim of this study was toevaluate the hearing in a group of patients with acute hypothyroidism, using bothconventional audiometry and transiently evoked otoacoustic emissions (TEOAEs). Material and methods:A group of 52 patients with thyroid carcinoma who underwent total thyroidectomy wasstudied prospectively, All patients were examined before surgery and 6-8 weekspostoperatively. During this period there was no replacement with levothyroxine and themagnitude of thyroxin depletion was monitored by serum thyroid-stimulating hormone levels. On preoperative encounter with each patient, a detailed questionnaire of historyof hearing loss, tinnitus, vertigo, previous ear infections, noise exposure, medications,and recent upper respiratory tract infection was completed. Patients were excluded ifthey were older than 50 years, in order to avoid the phenomenon of presbycusis, or ifthey had a history of cochleovestibular, vascular or neurologic disease, or any other riskfactor for hearing impairment. Pure-tone audiometry, tympanometry and transientlyevoked otoacoustic emissions were performed. A group of healthy volunteers of similarage and sex were used for comparison.Results:(1) Tympanograms were normal, either on initial testing (75%) or on repeat testing(25%).(2) Audiometry showed elevation of all postoperative hearing thresholds, whereas thethresholds varied significantly across frequency.(3) TEOAE testing showed response signal to noise ratios lower in the postoperativesession (hypothyroid state) than in the preoperative session on all measured frequencies.(4) Emission levels varied significantly across frequency, with maximum responseobserved at 2 kHz.(5) Comparison of significant pure-tone and otoacoustic emission shifts for individualears showed more ears affected in otoacoustic emission testing, indicating subclinicalcochlear involvement.(6) Comparison of hearing thresholds and otoacoustic emission levels between patientsand controls showed significant differences on postoperative testing. Conclusions:Acute hypothyroidism in adults causes elevation of hearing thresholds and reducedotoacoustic emissions. The effect on otoacoustic emissions is greater, indicatingsubclinical damage of the cochlear function.

scholarly journals Bayesian Pure-Tone Audiometry Through Active Learning Under Informed Priors

2021 ◽  
Vol 3 ◽  
Author(s):  
Marco Cox ◽  
Bert de Vries
Keyword(s):  
Mixture Model ◽  
Pure Tone ◽  
Information Gain ◽  
Side Information ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
Threshold Estimation ◽  
Data Set ◽  
Hearing Thresholds ◽  
Gp Model

Pure-tone audiometry—the process of estimating a person's hearing threshold from “audible” and “inaudible” responses to tones of varying frequency and intensity—is the basis for diagnosing and quantifying hearing loss. By taking a probabilistic modeling approach, both optimal tone selection (in terms of expected information gain) and hearing threshold estimation can be derived through Bayesian inference methods. The performance of probabilistic model-based audiometry methods is directly linked to the quality of the underlying model. In recent years, Gaussian process (GP) models have been shown to provide good results in this context. We present methods to improve the efficiency of GP-based audiometry procedures by improving the underlying model. Instead of a single GP, we propose to use a GP mixture model that can be conditioned on side-information about the subject. The underlying idea is that one can typically distinguish between different types of hearing thresholds, enabling a mixture model to better capture the statistical properties of hearing thresholds among a population. Instead of modeling all hearing thresholds by a single GP, a mixture model allows specific types of hearing thresholds to be modeled by independent GP models. Moreover, the mixing coefficients can be conditioned on side-information such as age and gender, capturing the correlations between age, gender, and hearing threshold. We show how a GP mixture model can be optimized for a specific target population by learning the parameters from a data set containing annotated audiograms. We also derive an optimal tone selection method based on greedy information gain maximization, as well as hearing threshold estimation through Bayesian inference. The proposed models are fitted to a data set containing roughly 176 thousand annotated audiograms collected in the Nordic countries. We compare the predictive accuracies of optimized mixture models of varying sizes with that of an optimized single-GP model. The usefulness of the optimized models is tested in audiometry simulations. Simulation results indicate that an optimized GP mixture model can significantly outperform an optimized single-GP model in terms of predictive accuracy, and leads to significant increases the efficiency of the resulting Bayesian audiometry procedure.

Automated Smartphone Audiometry: A Preliminary Validation of a Bone-Conduction Threshold Test App

2019 ◽  
Vol 128 (6) ◽  
pp. 508-515 ◽  
Author(s):  
Nicholas A. Dewyer ◽  
Patpong Jiradejvong ◽  
David S. Lee ◽  
Jacquelyn D. Kemmer ◽  
Jennifer Henderson Sabes ◽  
...  
Keyword(s):  
Pure Tone ◽  
Bone Conduction ◽  
Proof Of Concept ◽  
Threshold Test ◽  
Bone Conduction Threshold ◽  
Preliminary Validation ◽  
Hearing Thresholds ◽  
English Speaking ◽  
Contralateral Ear ◽  
Threshold Testing

Objective: To develop and validate an automated smartphone app that determines bone-conduction pure-tone thresholds. Methods: A novel app, called EarBone, was developed as an automated test to determine best-cochlea pure-tone bone-conduction thresholds using a smartphone driving a professional-grade bone oscillator. Adult, English-speaking patients who were undergoing audiometric assessment by audiologists at an academic health system as part of their prescribed care were invited to use the EarBone app. Best-ear bone-conduction thresholds determined by the app and the gold standard audiologist were compared. Results: Forty subjects with varied hearing thresholds were tested. Sixty-one percent of app-determined thresholds were within 5 dB of audiologist-determined thresholds, and 79% were within 10 dB. Nearly all subjects required assistance with placing the bone oscillator on their mastoid. Conclusion: Best-cochlea bone-conduction thresholds determined by the EarBone automated smartphone audiometry app approximate those determined by an audiologist. This serves as a proof of concept for automated smartphone-based bone-conduction threshold testing. Further improvements, such as the addition of contralateral ear masking, are needed to make the app clinically useful.

Voice Deviations and Coexisting Communication Disorders

1992 ◽  
Vol 23 (1) ◽  
pp. 82-87 ◽  
Author(s):  
Kenneth O. St. Louis ◽  
Gregory G. R. Hansen ◽  
Janice L. Buch ◽  
Tonia L. Oliver
Keyword(s):  
School Children ◽  
Pure Tone ◽  
Voice Disorders ◽  
Communication Disorders ◽  
Voice Disorder ◽  
Control Group ◽  
Hearing Thresholds ◽  
Communicative Disorders ◽  
Language Measures ◽  
The Voice

The purpose of this study was to determine the extent to which other communicative disorders coexist with voice disorders in school children. The authors randomly selected two voice deviant groups and a control group from a database of nearly 39,000 school children in grades 1–12. Hoarseness was the most commonly occurring voice disorder in both groups. The majority of voice disordered children had coexisting articulation deviations. In addition, the voice disordered samples differed significantly from controls on two language measures and mean pure-tone hearing thresholds. This study supports other research indicating that different communication disorders frequently coexist.

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