健康受试者的元音语音与纯音处理

Vowel-speech versus pure-tone processing in healthy subjects.

作者信息

Iino Hiroko, Ohta Katsuya, Hara Keiko, Miyajima Miho, Hara Minoru, Matsushima Eisuke, Matsuura Masato

机构信息

Biofunctional Informatics, Biomedical Laboratory Sciences, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo-ku, Tokyo 113-8510, Japan; Section of Liaison Psychiatry and Palliative Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo-ku, Tokyo 113-8510, Japan; Onda-daini Hospital, 302 Kanegasaku, Matsudo-shi, Chiba 270-2251, Japan.

出版信息

Neurosci Res. 2018 Dec;137:43-48. doi: 10.1016/j.neures.2018.03.002. Epub 2018 Apr 6.

DOI:10.1016/j.neures.2018.03.002

PMID:29630919

Abstract

To investigate the characteristics of speech perception, we evaluated the differences in mismatch negativity (MMN) between vowel change and frequency change. Additionally, we examined the effects of gender, age, and educational length on MMN. Forty healthy adults (21 females), who were native Japanese speakers, participated in the study. A Japanese vowel-speech pair (standard/a/vs. deviant/o/) and a pure-tone pair (standard 1000 Hz vs. deviant 1050 Hz) were constructed. MMN elicited by vowel-speech sounds was larger and earlier compared with pure-tone sounds. Larger and earlier MMNs for vowel-speech sounds than for pure-tone sounds suggest different processing of linguistically relevant information at the early stage in the auditory cortex. In conclusion, the factors influencing on MMN are different between vowel-speech sounds and pure-tone sounds.

摘要

为了研究言语感知的特征，我们评估了元音变化和频率变化之间失匹配负波（MMN）的差异。此外，我们还研究了性别、年龄和受教育年限对MMN的影响。40名以日语为母语的健康成年人（21名女性）参与了这项研究。构建了一组日语元音-语音对（标准音/a/与偏差音/o/）和一组纯音对（标准音1000赫兹与偏差音1050赫兹）。与纯音相比，元音-语音诱发的MMN更大且出现得更早。元音-语音的MMN比纯音的更大且更早出现，这表明在听觉皮层的早期阶段，对语言相关信息的处理方式不同。总之，影响MMN的因素在元音-语音和纯音之间是不同的。