| Contribution to the differentiation of peripheral versus central tinnitus via auditory brain stem response evaluation. | |
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MedLine Citation:
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PMID: 4004647 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Auditory brain stem response (ABR) parameters were evaluated in 54 subjects with unilateral idiopathic subjective tinnitus in order to verify the possibility of detecting its site of origin. All the subjects had normal hearing or a symmetrical bilateral sensorineural hearing loss. All the cases in whom middle or inner ear disease had been diagnosed, were excluded. Subjects, classified on the basis of their mean auditory threshold and masking curves according to Feldmann, underwent a residual inhibition (RI) test and ipsilateral narrow-band noise masking before a second ABR test was performed. Patients with positive RI made up the A+ group, while those with negative RI made up the A- group. The main characteristics observed were an increase of the mean latency values of wave I in the tinnitus ear in the A+ group while, after masking, the values of the affected and unaffected ears almost overlapped. An increase in the latency values of wave V, unaffected by the masking procedure, could be observed in A- patients. The occurrence of waves I and III was often affected in the tinnitus ears in both groups, but it increased, after masking, only in the A- patients. Based on the obtained data, the authors conclude that there may be a substantial difference concerning ABR parameters between the patients in whom residual tinnitus masking is demonstrable compared with those in whom it is not. |
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Authors:
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M Maurizi; F Ottaviani; G Paludetti; G Almadori; A Tassoni |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Audiology : official organ of the International Society of Audiology Volume: 24 ISSN: 0020-6091 ISO Abbreviation: Audiology Publication Date: 1985 |
Date Detail:
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Created Date: 1985-06-24 Completed Date: 1985-06-24 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 1273752 Medline TA: Audiology Country: SWITZERLAND |
Other Details:
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Languages: eng Pagination: 207-16 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Evoked Potentials, Auditory* Female Hearing Loss, Sensorineural / diagnosis Humans Male Middle Aged Neural Inhibition Perceptual Masking Reaction Time Tinnitus / diagnosis* |
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