Cochlear dead regions in adults and children: diagnosis and clinical implications

Moore, Brian C. J. and Malicka, Alicja N. (2013) Cochlear dead regions in adults and children: diagnosis and clinical implications. Seminars in Hearing, 34 1: 37-50. doi:10.1055/s-0032-1333150

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Author Moore, Brian C. J.
Malicka, Alicja N.
Title Cochlear dead regions in adults and children: diagnosis and clinical implications
Journal name Seminars in Hearing   Check publisher's open access policy
ISSN 0734-0451
1098-8955
Publication date 2013
Sub-type Article (original research)
DOI 10.1055/s-0032-1333150
Volume 34
Issue 1
Start page 37
End page 50
Total pages 14
Place of publication New York, NY, United States
Publisher Thieme Medical Publishers
Collection year 2014
Subject 3616 Speech and Hearing
Abstract The inner hair cells (IHCs) are the transducers of the cochlea; they convert mechanical vibrations to neural activity. When the IHCs and/or neurons are nonfunctioning over a certain region of the cochlea, this is referred to as a dead region. A dead region can be defined in terms of the characteristic frequencies of the IHCs and/or neurons immediately adjacent to the dead region. Dead regions can be detected, and their limits can be determined, using the threshold equalizing noise (TEN) test or by measurement of psychophysical tuning curves (PTCs). Both PTCs and the TEN test can be used to assess children as young as 7 years of age. The identification of dead regions can be helpful in determining the appropriate form of amplification. For both adults and children with restricted dead regions ("holeso"), benefit is obtained from amplification of frequencies up to at least 4 kHz. For adults and children with extensive continuous dead regions starting at a relatively low frequency (≤ 1.5 kHz) there may be little or no benefit from amplification of high frequencies.
Keyword Amplification
Dead region
Hearing aid
Psychophysical tuning curve
TEN test
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Health and Rehabilitation Sciences Publications
 
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