| Controlling Hazardous Noise and Dust within the Industrial Workforce using a Simple Barrier |
Mar-2009 |
118 pages |
| Authors:
Daniel D Sweeney; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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 | The United States Air Force (USAF) has experienced a dramatic increase in hearing loss claims since 2001. Additionally, many operations within the USAF expose personnel to hazardous dust levels. Likewise, the US mining industry has difficulties controlling hazardous noise and dust exposures in underground mining. Specifically, studies have shown that coal mine longwall shearer operators are routinely exposed to noise levels at 151 percent of the allowable dose and approximately ... |
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| Postdeployment Hearing Loss in U.S. Army Soldiers Seen at Audiology Clinics from April 1, 2003, through March 31, 2004 |
DEC 2005 |
9 pages |
| Authors:
Thomas M. Helfer; Nikki N. Jordan; Robyn B. Lee; ARMY CENTER FOR HEALTH PROMOTION AND PREVENTIVE MEDICINE ABERDEEN PROVING GROUND MD
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| U.S. Army soldiers face unique noise exposures in the current deployed setting. The effects of these deployment-related exposures have not previously been documented. In an attempt to initiate this process, medical evaluations performed at military audiology clinics from April 2003 through March 2004 were reviewed to compare noise-induced hearing loss injury (NIHLI) outcomes among soldiers whose diagnoses were classified as postdeployment-related versus non-postdeployment-related. Sentinel NIHLI outcomes of interest included acoustic ... |
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| Assessment and Standardization of Personal Hearing Protection including Active Noise Reduction |
01 JUN 2005 |
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| Authors:
Herman J. Steeneken; HUMAN FACTORS RESEARCH INST TNO SOESTERBERG (NETHERLANDS)
|
 | The performance of passive hearing protection is normally quantified by the sound attenuation or insertion loss (IL). The IL allows prediction of the noise level at the eardrum for a given ambient noise spectrum. A subjective test (with test-signal levels at the threshold of hearing) is normally used to measure the sound attenuation. Active noise reduction requires a different assessment method. Due to self-noise and level dependency, assessment methods operating ... |
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| Evaluation of Noise Effects in Auditory Function in Spanish Military Pilots |
APR 2005 |
9 pages |
| Authors:
J. M. Lorente; B. Puente; B. Esteban; F. Rios; P. Vallejo; C. Velasco; CIMA MADRID (SPAIN)
|
| Military pilots are particularly exposed to a wide variety of environmental stresses, one of which is the noise produced by the aircraft used for flying duties. In addition to aircraft noise, changes in cabin pressure and vibration can be considered as contributing factors. Adverse effects can be produced under several situations, through exposure to noise in the flight line or during taxi, take off, or cruise operations. The environmental stress ... |
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| Auditory Tests for the Early Detection of Noise-Susceptible Individuals - A Literature Study |
APR 2005 |
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| Authors:
Joos Vos; HUMAN FACTORS RESEARCH INST TNO SOESTERBERG (NETHERLANDS)
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| As a result of noisy military systems and the limited applicability of personal hearing protection, there continues to be a high incidence of noise-induced hearing loss (NIHL) among military personnel. One of the ways to reduce the adverse effects of noise, such as a decreased hearing acuity and a noticeable reduction in the ability to understand speech in noisy conditions, might be the selection of persons who are less susceptible ... |
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| Transient-Evoked Otoacoustic Emissions, Preliminary Results for Validity of TEOAEs Implemented on Mimosa Acoustics T2K Measurement System v3.1.3 |
26 FEB 2004 |
46 pages |
| Authors:
Judi A. Lapsley; Paul Boege; Lynne Marshall; Patricia S. Jeng; NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
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| The validity of transient-evoked otoacoustic emissions needed to be determined for click and chirp stimuli implemented on the Mimosa Acoustics T2K Measurement System. The validity of transient-evoked otoacoustic emissions was evaluated for the Mimosa Acoustics T2K Measurement System v3.1.3 in eight hearing-impaired ears. These ears should not produce TEOAEs, so any responses are likely to be due to measurement artifact. Click and chirp stimuli showed acceptable validity for stimulus levels ... |
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| Noise Exposure and Risk of Hearing Loss for Air Force Welders |
2003 |
75 pages |
| Authors:
Jonathan W. Thomas; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
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| Recent United States Air Force (USAF) studies hypothesized current measurement techniques are not adequately measuring welder noise exposures, and that welders are losing their hearing at a higher rate than expected based on attributable risk. The objectives of this study were to assess Electromagnetic Field (EMF) interference on welding noise exposure measurements and to assess noise measurement sampling rates and averaging times to determine potential differences in the amount of ... |
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| Noise Induced Hearing Loss and Auditory Localization |
2003 |
3 pages |
| Authors:
M. A. Ericson; A. B. Staley; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH
|
| Many studies have been conducted on the ability of normal hearing listeners to judge the locations of various sounds. A few researchers have explored the effects of noiseinduced hearing loss on auditory localization acuity (Noble, Byrne and Lepage, 1994; Smith- Olinde, Koehnke and Besing, 1998; and Lorenzi, Gatehouse and Lever, 1999). These researchers have shown that the use of higher frequency energy in the signal is reduced by high-frequency hearing ... |
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| Occupationally Acquired Hearing Loss Among Civilian and Active Duty Firefighters |
25 JUN 2002 |
33 pages |
| Authors:
Alden D. Hilton; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
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| Fire fighters are routinely exposed to hazardous noise in excess of Occupational Health and Safety Administration (OSHA) recommendations. A study by Reischl (1979) demonstrated that fire fighters are routinely exposed to impulse noises in excess of 115 dBA, and the 8-hour Time Weighted Averages (TWA) were in excess of OSHA recommendations. Tubbs (1991) demonstrated that the average fire fighter exhibited a characteristic noise-induced permanent threshold shift (PTS) that was related ... |
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| Bioacoustics of Monterey Bay Pinnipeds: Extraction of Information from Acoustic Signals |
MAR 2002 |
5 pages |
| Authors:
Ronald J. Schusterman; CALIFORNIA UNIV SANTA CRUZ
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| Two doctoral students at UCSC were supported by this ASSERT award. The students participated in an ongoing ONR funded research program on the bioacoustics of pinnipeds while developing and carrying out complementary independent investigations. During the award period, both students received specialized training in animal psychophysics, experimental design, and acoustic instrumentation and measurement. Both students completed and published significant original research related to sensory biology, communication, and cognition in seals ... |
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| Analysis of Changes in Auditory Nerve Signals Following Simulated Tinnitus for the Verification of Cochlear Model |
25 OCT 2001 |
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| Authors:
Y. J. Yi; J. J. Im; Y. Z. Jin; B. R. Park; CHONBUK NATIONAL UNIV (KOREA) DIV OF ELECTRONICS AND INFORMATION ENGINEERING
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| For an interpretation of the tinnitus phenomenon, reticular lamina which transmits energy in a cochlear was assumed as a mass and the components for the stiffness and control were added to the model even though it is perceived just as a thin layer. Then, animal experiment with guinea pigs was devised to evaluate the effect of tinnitus on the auditory nerves. Salicylate was introduced to the animal based on the ... |
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| Sex Difference in Susceptibility and Resistance to Noise-Induced Hearing Loss in Chinchillas |
OCT 2000 |
119 pages |
| Authors:
Sandra L. McFadden; STATE UNIV OF NEW YORK AT BUFFALO AMHERST
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| This report summarizes research conducted during the grant period 9/ 23/96-9/22/00. The overarching aim of the project was to identify factors associated with sex/gender that could impact military assignments and hearing conservation programs. These factors included sex differences in basic auditory sensitivity and susceptibility to noise-induced hearing loss (NIHL), sex differences in the ability to benefit from "sound conditioning" and pharmacologic treatment, and the effects of two endogenous steroid hormones, ... |
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| Sex Differences in Susceptibility and Resistance to Noise-Induced Hearing Loss in Chinchillas |
OCT 1999 |
53 pages |
| Authors:
Sandra L. McFadden; STATE UNIV OF NEW YORK AT BUFFALO AMHERST
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| There is tremendous variability in the amount of hearing loss individuals develop from a given noise exposure. The reasons for individual differences in susceptibility to noise-induced hearing loss (NIHL) are largely unknown, but may include factors such as levels of endogenous antioxidant enzymes or steroid hormones. Our experiments are focusing on the effects of steroid hormones on susceptibility to NIHL in chinchillas. Chinchillas treated ... |
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| Treatment of Noise-Induced Hearing Loss |
1999 |
10 pages |
| Authors:
Gervais D'Aldin; L. Cherny; A. Dancer; INSTITUT FRANCO-ALLEMAND DE RECHERCHES SAINT-LOUIS (FRANCE)
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| The actual efficiency of the present medical treatments of the acoustic trauma is investigated. Guinea pigs are subjected to an acoustic trauma. The recovery of the noise-induced hearing loss is followed up to 14 days post exposure by electrocochleography and morphologic examination of the cochlea is performed (scanning electron microscopy) . When corticoids are administrated one hour after the noise exposure, less threshold shift and less hair ... |
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| Sex Difference in Susceptibility and Resistance to Noise-induced Hearing Loss in Chinchillas |
OCT 1998 |
58 pages |
| Authors:
Sandra L. McFadden; STATE UNIV OF NEW YORK AT BUFFALO AMHERST
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| Considerable evidence points to gender differences in susceptibility to noise-induced hearing loss (NIHL), a major occupational hazard for military personnel. However. the precise nature of these differences and how they apply to the types of noises found in military settings is unknown. Five experiments were conducted to explore these issues. Experiments conducted during Year I showed that chinchillas exhibit sex differences in basic auditory sensitivity and susceptibility to temporary and ... |
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| A Health Hazard Assessment for Blast Overpressure Exposures Subtitle - Use of Animal Test Data in the Development of a Human Auditory Hazard Criterion for Impulse Noise (Part 1) |
AUG 1998 |
60 pages |
| Authors:
Roger P. Hamernik; James H. Patterson Jr.; William A. Ahroon; James H. Stuhmiller; JAYCOR SAN DIEGO CA
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| Hearing loss and sensory cell loss data, obtained from 909 chinchillas exposed to one of 137 different impulse noise or blast wave exposure paradigms, were statistically analyzed. The objective was to extract relations between the effects of the exposure on the auditory system (effects metrics) and metrics used to characterize the blast wave exposure. Specifically the following two questions were asked: (a) What is the best indicator of the amount ... |
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| Georgetown Institute for Cognitive and Computational Sciences |
DEC 97 |
151 pages |
| Authors:
Robert S. Ledley; NATIONAL BIOMEDICAL RESEARCH FOUNDATIONWASHINGTON DC
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| GICCS faculty has begun a major initiative to elucidate the complex mechanisms of higher auditory processing. Species with specialized hearing, such as bats, are used as models for complex sound processing and compared to those using cats and primates, which also use acoustic signals as a primary means of communication. Parallel research in humans using functional brain imaging and cognitive psychology examine how the human brain deals with complex sounds, ... |
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| Use of Animal Test Data in the Development of a Human Auditory Hazard Criterion for Impulse Noise, Part 2 |
1997 |
252 pages |
| Authors:
William A. Ahroon; Philemon Chan; STATE UNIV OF NEW YORK COLL AT PLATTSBURGH AUDITORY RESEARCH LAB
|
| Hearing loss and sensory cell loss data, obtained from 909 chinchillas exposed to one of 137 different impulse noise or blast wave exposure paradigms, were statistically analyzed. The objective was to extract relations between the effects of the exposure on the auditory system (effects metrics) and metrics used to characterize the blast wave exposure. The results of the tests are presented in this second part. ... |
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| Use of Animal Test Data in the Development of a Human Auditory Hazard Criterion for Impulse Noise, Part 1 |
1997 |
64 pages |
| Authors:
William A. Ahroon; Philemon Chan; STATE UNIV OF NEW YORK COLL AT PLATTSBURGH AUDITORY RESEARCH LAB
|
| Hearing loss and sensory cell loss data, obtained from 909 chinchillas exposed to one of 137 different impulse noise or blast wave exposure paradigms, were statistically analyzed. The objective was to extract relations between the effects of the exposure on the auditory system (effects metrics) and metrics used to characterize the blast wave exposure. Specifically the following two questions were asked: (a) What is the best indicator ... |
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| Naural Responses to Injury: Prevention, Protection, and Repair. Volume 6. Protecting the Auditory System and Prevention of Hearing Problems |
1997 |
292 pages |
| Authors:
Nicolas G. Bazan; LOUISIANA STATE UNIV NEW ORLEANS SCHOOL OF MEDICINE
|
| ANIMAL PROJECT: The SPECIFIC AIMS of this study are to demonstrate and explore mechanisms for preventing the effects of intense sound. In years 01, 02, 03 we discovered that continuous, ipsilateral sound stimulation (CM-LIPS) will produce complex changes in the mechanics of the cochlea. In year 04 we obtained additional evidence that ATP is involved in generating this mechanics. We completed the noise exposure studies and ... |
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| Neural Responses to Injury: Prevention, Protection and Repair; Volume 6: Protecting the Auditory System and Prevention of Hearing Problems |
OCT 1996 |
201 pages |
| Authors:
Nicolas G. Bazan; LOUISIANA STATE UNIV NEW ORLEANS
|
| The experimental animals used during this period for the project, Neural Responses to Injury: Prevention, Protection, and Repair, Subproject: Protecting the Auditory System and Prevention of Hearing Problems, are as follows: Species, Guinea Pig, Number Allowed, 276, Number Used, 83, LSU IACUC# 1061. ANIMAL PROJECT: The SPECIFIC MMS of this study are to demonstrate and explore mechanisms for preventing the effects of intense sound. In years 01, and 02 we ... |
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| Speech-Perception Aids for Hearing-Impaired People: Current Status and Needed Research |
26 MAR 1991 |
25 pages |
| Authors:
NATIONAL RESEARCH COUNCIL WASHINGTON DC COMMITTEE ON HEARING BIOACOUSTICS AND BIOMECHANICS
|
| Both the overall aging of the population and its exposure to higher noise levels have increased the tendency to hearing loss and the importance of improved hearing aids for speech perception. This article reviews improvements in conventional electroacoustic hearing aids, as well as recently developed alternative classes of speech-perception aids, including surgically implanted cochlear stimulators, and vibrotactile, electrocutaneous and optical stimulating devices. It is concluded ... |
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| Symposium: Noise-Induced Hearing Loss Held in Beaune, France on 28-30 May 1990 |
91 |
570 pages |
| Authors:
Armand L. Dancer; Donald Henderson; Richard J. Salvi; Roger P. Hamernik; STATE UNIV OF NEW YORK COLL AT PLATTSBURGH
|
| The IVth International Symposium on the Effects of Noise was held in Beaune, France, May 28-30, 1990. The symposium brought together a distinguished group of scientists and clinicians from all the disciplines related to noise- induced hearing loss. Noise-induced hearing loss (NIHL) continues to be a significant public health problem. In 1987, the National Institute of Occupational Safety and Health rated NIHL as one of the United States' top 10 ... |
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| The Effects of Hearing Loss on Speech Communication and the Perception of Other Sounds |
JUN 89 |
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| Authors:
Alice H. Suter; GALLAUDET UNIV WASHINGTON DC
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| Noise-induced hearing loss acts as a low-pass filter for individuals receiving speech sounds or warning signals. These losses can also cause some degree of distortion in the auditory system, necessitating a speech-to-noise ratio of up to 10 dB more favorable to achieve speech recognition comparable to a normal-hearing listener. These distortions may appear in the frequency, intensity, and temporal domains. Hearing in the high-frequency range is important for understanding speech ... |
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| Studies of Aural Nonlinearity and the Mechanisms of Auditory Fatigue. Part 2. Epidemiologic Methods in Noise-Induced Hearing Loss |
APR 82 |
43 pages |
| Authors:
John Erdreich; Linda Erdreich; OKLAHOMA UNIV HEALTH SCIENCES CENTER OKLAHOMA CITY DEPT OF OTORHINOLARYNGOLOG Y
|
| The past two decades have witnessed a growth in the number of scientists concerned with the distribution of noise induced hearing loss (NIHL) in industrial populations. Studies conducted by these scientists have incorporated some of the epidemiological principles which have evolved for studying other chronic diseases; however, many available methodological and analytical techniques have been overlooked. Behind all of these is one goal - how to obtain appropriate data and ... |
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| Two Approaches to Category Representation in Aural Classification. |
DEC 1978 |
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| Authors:
James A. Ballas; James H. Howard Jr; CATHOLIC UNIV OF AMERICA WASHINGTON D C HUMAN PERFORMANCE LAB
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| The classification model proposed by Howard, Ballas and Burgy (1978) assumes that each category in a classification task is represented by an abstract prototype. Neumann (1977) argues that the evidence for prototype representations can be explained by the indeterminancy of examplar attributes. A test of these two models would require that attribute indeterminancy be measured. In a classification task, attribute indeterminancy can lead to overlapping category boundaries. In turn, this ... |
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Reports by Keyword(s)
*AUDITORY DEFECTS
