Anatomical correlates of impulse noise-induced mechanical damage in the cochlea

Hamernik, Roger P.; Turrentine, George; Roberto, M.; Salvi, Richard; Henderson, Donald

doi:10.1016/0378-5955(84)90077-7

Cited by 160 publications

(91 citation statements)

References 15 publications

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“…Tympanic membrane perforation and ossicular disruption might, therefore, protect the cochlea. Hamernik et al, (1984a) and Eames et al, (1975) reported similar findings using multiple shock waves. Disruption of the conducting mechanism will reduce energy transmission to the cochlea during subsequent shock waves.…”

Section: Permanent Hearing Losssupporting

confidence: 74%

The Effects of Underwater Blast on Divers

Cudahy¹,

Parvin²

2001

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) 8-02-20012. REPORT TYPE PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBERNaval Submarine Medical Research Laboratory Naval Submarine Base New London Box 900 Groton, CT 06349-5900 NSMRL Report #1218 SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S)Naval Submarine Medical Resea NSMRL rch Laboratory Naval Submarine Base New SPONSOR/MONITOR'S REPORTGroton, CT 06349-5900 NUMBER(S) 1218 DISTRIBUTION / AVAILABILITY STATEMENT AApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTThis review of underwater blast provides a brief background on the physical acoustics for underwater blast, summarizes the literature on the bioeffects for divers, and compares model results. The final chapter provides the authors' views on necessary research to meet gaps in the models as well as describe the best application of our current knowledge to a guidance for underwater blast. SUBJECT TERMS SUMMARY PAGE THE PROBLEMUnderwater blast effects on divers received a great deal of attention up to the 1970s, and several investigators in the United States and the United Kingdom contributed to this work. Most of this research focused on the potentially lethal effects of the blast and used those to estimate safe diving distances. Several models were developed to make these estimates. The data used to drive the models were mostly conducted at shallow depths and with relatively small charges. METHODA review of all information on underwater blast and their affect in divers was undertaken by the authors. FINDINGSThere have been some more recent incidents which suggest that the current models of underwater blast may be incomplete and that additional data may be needed. Furthermore, there has been no systematic comparison of the various models. This review of underwater blast provides a brief background on the physical acoustics for underwater blast, summarizes the literature on the bioeffects for divers, and compares model results. The final chapter provides the author's views on necessary research to meet gaps in the model...

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Section: Permanent Hearing Losssupporting

confidence: 74%

The Effects of Underwater Blast on Divers

Cudahy¹,

Parvin²

2001

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“…The vestibular system, especially sacculus damage caused by noise, emerges by the same mechanism [9,10,13] . the sacculus, inferior vestibular nerve, vestibular nucleus, and cervical muscle activity [3] .…”

Section: Discussionmentioning

confidence: 99%

“…These changes may be due to direct mechanical trauma or metabolic changes. The causes of damage are ischemia, reactive oxygen radicals, and metabolic overload in the organ of Corti [9,10] . A prolonged Table 2.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Vestibular Evoked Myogenic Potentials and Electrocochleography in Noise Induced Hearing Loss

Dalğıç

Yılmaz²,

Hıdır³

et al. 2015

Int Adv Otol

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OBJECTIVE:Our objective was to analyze the electrocochleography (ECoG) and cervical vestibular evoked myogenic potential (cVEMP) results of patients with noise-induced hearing loss (NIHL). MATERIALS and METHODS:The study included 20 patients with NIHL. Pure-tone audiometry, tympanic membrane ECoG, and cVEMP were performed on all patients. The patients were divided into two groups based on averaged thresholds at 4, 6, and 8 kHz; whereby, group 1 comprised patients who had a threshold higher than 68.3 dB HL, whereas group 2 comprised patients with a threshold lower than 68.3 dB HL. RESULTS:Group 2 had a significantly higher number of patients with abnormal cVEMP values (63% versus 28%) (p=0.028). There was no significant difference in the incidence of ECoG abnormality between the groups (p>0.05), but there was a significant difference in the incidence of recognizable ECoG potentials between the groups (p<0.05). When only patients with vertigo/dizziness were considered, the group with vertigo and a lower degree of hearing loss (group 2) showed a higher incidence of abnormal cVEMP (p<0.05). CONCLUSION:Although the anatomical proximity of the sacculus to the cochlea leads to the consideration of a common involvement of these structures in NIHL, our results did not support the idea of a common and proportional involvement of the vestibular and auditory systems. Our study shows that saccular involvement is disproportionate to auditory involvement in NIHL.

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“…It reveals the complexity in the relationship between oestrogen and apoptosis. In this group, right after the exposure, the concentration of oestradiol did not reach the top level, unlike in the treatment group, but outer hair cells immediately start dying during the acoustic insult and continue to do so until at least 30 days thereafter [35,36] . Thus, at this time point, the inhibitory effects of oestrogen in this group were lower than those in the treatment group.…”

Section: Discussionmentioning

confidence: 99%