Spatiotemporal frequency characteristics of cerebral oscillations during the perception of fundamental frequency contour changes in one-syllable intonation
Spatiotemporal frequency characteristics of cerebral oscillations during the perception of fundamental frequency contour changes in one-syllable intonation
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DOI：
10.1016/j.neulet.2012.03.031
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发表时间：
2012-05
影响因子：
2.5
通讯作者：
S. Ueno;E. Okumura;G. Remijn;Y. Yoshimura;M. Kikuchi;K. Shitamichi;K. Nagao;Masayuki Mochiduki;Y. Haruta;Norio Hayashi;T. Munesue;T. Tsubokawa;Manabu Oi;Hideo Nakatani;H. Higashida;Y. Minabe
中科院分区：
文献类型：
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作者：
S. Ueno;E. Okumura;G. Remijn;Y. Yoshimura;M. Kikuchi;K. Shitamichi;K. Nagao;Masayuki Mochiduki;Y. Haruta;Norio Hayashi;T. Munesue;T. Tsubokawa;Manabu Oi;Hideo Nakatani;H. Higashida;Y. Minabe
准确地感知人类声音的基频（F0）轮廓变化对于理解说话人的语调以及他/她的态度都很重要。在这项研究中，我们研究了21名日语母语听众在日语单音节感叹词“ne”中F0轮廓变化感知的神经过程。在被动古怪范式中，“ne”具有高下降F0轮廓，用于敦促听者做出反应，随机呈现为具有平坦F0轮廓的频繁“ne”音节（即无意义的语调）中的罕见偏差。采用自适应空间滤波方法对全脑脑磁图记录的神经磁时间过程进行滤波，估计了古怪范式下事件相关脑振荡变化的时空频率动态。我们的研究结果表明，在异常刺激开始后的100 - 300和300 - 500毫秒的时间窗内，右侧颞叶和额叶区域的β带事件相关非同步（ERD）显著升高（高下降F0轮廓）。这是第一个揭示在感知人类声音的语调（非词汇）F0轮廓变化过程中大脑振荡的详细时空频率特征的研究。结果进一步证实，右半球与人类声音中语调F0轮廓信息的感知有关，特别是在早期时间窗。
Accurate perception of fundamental frequency (F0) contour changes in the human voice is important for understanding a speaker's intonation, and consequently also his/her attitude. In this study, we investigated the neural processes involved in the perception of F0 contour changes in the Japanese one-syllable interjection “ne” in 21 native-Japanese listeners. A passive oddball paradigm was applied in which “ne” with a high falling F0 contour, used when urging a reaction from the listener, was randomly presented as a rare deviant among a frequent “ne” syllable with a flat F0 contour (i.e., meaningless intonation). We applied an adaptive spatial filtering method to the neuromagnetic time course recorded by whole-head magnetoencephalography (MEG) and estimated the spatiotemporal frequency dynamics of event-related cerebral oscillatory changes in the oddball paradigm. Our results demonstrated a significant elevation of beta band event-related desynchronization (ERD) in the right temporal and frontal areas, in time windows from 100 to 300 and from 300 to 500ms after the onset of deviant stimuli (high falling F0 contour). This is the first study to reveal detailed spatiotemporal frequency characteristics of cerebral oscillations during the perception of intonational (not lexical) F0 contour changes in the human voice. The results further confirmed that the right hemisphere is associated with perception of intonational F0 contour information in the human voice, especially in early time windows.