Verification of difference of neural mechanisms underlying auditory feedback in stuttering vs. non-stuttering adults

2014 Fiscal Year Final Research Report

• Project/Area Number: 24700183
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Perception information processing/Intelligent robotics
• Research Institution: Advanced Telecommunications Research Institute International (2013-2014); 国立障害者リハビリテーションセンター(研究所) (2012)
• Principal Investigator: NISHIKIDO Akikazu 株式会社国際電気通信基礎技術研究所, 脳情報通信総合研究所, 研究員 (60610409)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 吃音 / 聴覚フィードバック / fMRI / ホルマント周波数

Outline of Final Research Achievements

The pathology of the stuttering, which is a speech disorder with dysfluency, is not well known. The previous studies suggest the possibility of abnormality of the auditory feedback control of people who stutter (PWS) in comparison with people who do not stutter (PNS). To verify the possibility of the abnormality, we performed fMRI experiments under the task, which is to speak with the auditory feedback modified formant frequencies, and response of formant frequencies and brain activities during speech were measured for the PWS and the PNS, responsibility. As a result, the activation in the right angular gyrus were higher in the PWS under speaking with the auditory feedback modified formant frequencies than in the PNS under the same. These results confirmed the possibility of the abnormality of the auditory feedback control of PWS in comparison with PNS.

Free Research Field

知覚情報処理