Glides in speech fundamental frequency are reflected in the auditory N1m response
Glides in speech fundamental frequency are reflected in the auditory N1m response
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语音基频的滑动反映在听觉 N1m 响应中
DOI：
10.1097/00001756-200405190-00025
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发表时间：
2004
期刊：
影响因子：
1.7
通讯作者：
H. Tiitinen
中科院分区：
文献类型：
--
作者：
A. Mäkelä;P. Alku;V. Mäkinen;H. Tiitinen
本文用脑磁图（MEG）研究了10名被试对恒定和滑动语音基频（F0）知觉的皮层动力学。刺激包括具有恒定的、上升的或下降的F0和相应频率的音调的元音，与元音在强度或响度上匹配。N1m反应的幅度是高度敏感的F0变化嵌入在元音和不敏感的相应的变化在音调。由声调引起的N1m潜伏期相对于元音显著延迟。因此，N1m的语音特异性行为源于皮质对有声语音的声学结构的敏感性，即对F0及其谐波的敏感性，这是语音中音高和语调感知的基础。
The cortical dynamics underlying the perception of constant and gliding speech fundamental frequency (F0) was investigated in 10 subjects using magnetoencephalography (MEG). The stimuli comprised vowels having either constant, ascending or descending F0s and tones of corresponding frequencies, matched with the vowels in intensity or loudness. The amplitude of the N1m response was highly sensitive to F0 variation embedded in vowels and insensitive to corresponding variation in tones. The latency of the N1m elicited by the tones with respect to vowels was significantly delayed. Thus, the speech-specific behavior of the N1m arises out of cortical sensitivity to the acoustic structure of voiced speech, that is to the F0 and its harmonics, which underlie the perception of pitch and intonation in speech.