语音整合时间窗口对错配否定的影响。

IF 1.6 4区 医学 Q3 CLINICAL NEUROLOGY Clinical EEG and Neuroscience Pub Date : 2023-11-01 Epub Date: 2022-04-12 DOI:10.1177/15500594221093607
Hiroshi Hoshino, Tetsuya Shiga, Yuhei Mori, Michinari Nozaki, Kazuko Kanno, Yusuke Osakabe, Haruka Ochiai, Tomohiro Wada, Masayuki Hikita, Shuntaro Itagaki, Itaru Miura, Hirooki Yabe
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引用次数: 1

摘要

语音刺激具有复杂的结构,目前还不清楚大脑是如何处理它们的。当一个人的大脑探测到一种罕见的声音时,就会引发一种事件相关电位(ERP),也就是所谓的失配消极性(MMN)。在这项研究中,MMNs被测量对一个由日语元音组成的复杂音的省略部分的反应。结果表明,在左耳刺激下,右半球的潜伏期明显短于额中线和左半球。此外,省略潜伏期的结果显示,在时间整合窗口的后半部分省略的刺激潜伏期比在时间整合窗口的前半部分省略的刺激潜伏期更长。在左耳刺激下,右半球的平均峰值幅度高于额叶中线和左半球。综上所述,本研究的结果表明,认为刺激具有严格的语音特征是不正确的。然而。遗漏潜伏期的交互作用结果不显著。这些结果表明,偏差的检测时间可能与刺激耳无关。然而,异常刺激的类型对潜伏期的影响是显著的。这是因为当TWI的后半部分发生偏差时,无论对耳朵的刺激如何,对偏差的检测都会延迟。
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Effect of the Temporal Window of Integration of Speech Sound on Mismatch Negativity.

Speech-sound stimuli have a complex structure, and it is unclear how the brain processes them. An event-related potential (ERP), known as mismatch negativity (MMN), is elicited when an individual's brain detects a rare sound. In this study, MMNs were measured in response to an omitted segment of a complex sound consisting of a Japanese vowel. The results indicated that the latency from onset in the right hemisphere was significantly shorter than that in the frontal midline and left hemispheres during left ear stimulation. Additionally, the results of latency from omission showed that the latency of stimuli omitted in the latter part of the temporal window of integration (TWI) was longer than that of stimuli omitted in the first part of the TWI. The mean peak amplitude was found to be higher in the right hemisphere than in the frontal midline and left hemispheres in response to left ear stimulation. In conclusion, the results of this study suggest that would be incorrect to believe that the stimuli have strictly the characteristics of speech-sound. However. the results of the interaction effect in the latencies from omission were insignificant. These results suggest that the detection time for deviance may not be related to the stimulus ear. However, the type of deviant stimuli on latencies was found to be significant. This is because the detection of the deviants was delayed when a deviation occurred in the latter part of the TWI, regardless of the stimulation of the ear.

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来源期刊
Clinical EEG and Neuroscience
Clinical EEG and Neuroscience 医学-临床神经学
CiteScore
5.20
自引率
5.00%
发文量
66
审稿时长
>12 weeks
期刊介绍: Clinical EEG and Neuroscience conveys clinically relevant research and development in electroencephalography and neuroscience. Original articles on any aspect of clinical neurophysiology or related work in allied fields are invited for publication.
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