Study of the efficacy of the Japanese version of MIT : Changes in the speech characteristics captured by acoustic analysis Yuriko Nakagawa 1 , Jumpei Kaneda 2 , Ryoko Hayashi 2 , Mayumi Sano 3 , Masayuki Sato 4 , Keiko Seki 3 1Graduate School of Medicine, Kobe University 2Graduate School of Intercultural Studies, Kobe University 3Graduate School of Health Sciences, Kobe University 4Graduate School of Medicine, Mie University Keyword: Melodic Intonation Therapy(MIT) , 発語失行 , 維持期 , 有効性 , 音響分析 , Melodic Intonation Therapy (MIT) , apraxia of speech , chronic stage , efficacy , acoustic analysis pp.174-183
Published Date 2010/11/15
DOI https://doi.org/10.11477/mf.6001100257
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 Melodic Intonation Therapy (MIT) is a therapeutic technique for apraxia of speech (AOS). The efficacy of a Japanese version of MIT (J-MIT) was verified by Seki et al (1983). However, there has been no other report about J-MIT since then. The purpose of this study is to verify the efficacy of J-MIT objectively once again, and to compare the speech characteristics of pre-MIT and post-MIT using acoustic analysis.

 The case was a 58-year-old male who had a cerebral infarction and demonstrated severe Broca's aphasia with AOS. He received MIT for 10 days, starting 13 months after the onset of his stroke. We prepared three sets of words for the experiment. Set A was used as exercises for MIT, but sets B and C were not. The set B had the same accent patterns as set A, while set C had different accent patterns. Following MIT, set A and B showed a statistically significant increase in the number of correct phonemes, but set C did not.

 This experiment utilized intensive MIT over a short period on a chronic aphasia case in order to distinguish the effect of MIT from other effects, such as spontaneous recovery. We concluded that the improvement in the clarity of post-MIT speech was caused by J-MIT.

Copyright © 2010, Japanese Association of Speech-Language-Hearing Therapists. All rights reserved.


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