Broadened population-level frequency tuning in the auditory cortex of tinnitus patients.

Abstract:

:Tinnitus is a phantom auditory perception without an external sound source and is one of the most common public health concerns that impair the quality of life of many individuals. However, its neural mechanisms remain unclear. We herein examined population-level frequency tuning in the auditory cortex of unilateral tinnitus patients with similar hearing levels in both ears using magnetoencephalography. We compared auditory-evoked neural activities elicited by a stimulation to the tinnitus and nontinnitus ears. Objective magnetoencephalographic data suggested that population-level frequency tuning corresponding to the tinnitus ear was significantly broader than that corresponding to the nontinnitus ear in the human auditory cortex. The results obtained support the hypothesis that pathological alterations in inhibitory neural networks play an important role in the perception of subjective tinnitus.NEW & NOTEWORTHY Although subjective tinnitus is one of the most common public health concerns that impair the quality of life of many individuals, no standard treatment or objective diagnostic method currently exists. We herein revealed that population-level frequency tuning was significantly broader in the tinnitus ear than in the nontinnitus ear. The results of the present study provide an insight into the development of an objective diagnostic method for subjective tinnitus.

journal_name

J Neurophysiol

authors

Sekiya K,Takahashi M,Murakami S,Kakigi R,Okamoto H

doi

10.1152/jn.00385.2016

subject

Has Abstract

pub_date

2017-03-01 00:00:00

pages

1379-1384

issue

3

eissn

0022-3077

issn

1522-1598

pii

jn.00385.2016

journal_volume

117

pub_type

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