θ-Band Cortical Tracking of the Speech Envelope Shows the Linear Phase Property
θ-Band Cortical Tracking of the Speech Envelope Shows the Linear Phase Property
复制标题
语音包络的 β 波段皮层跟踪显示了线性相位特性
DOI:
10.1523/eneuro.0058-21.2021
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发表时间:
2021-07
期刊:
影响因子:
3.4
通讯作者:
Benyan Luo
中科院分区:
文献类型:
--
作者:
Jiajie Zou;Chuan Xu;Cheng Luo;Peiqing Jin;Jiaxin Gao;Jingqi Li;Jian Gao;Nai Ding;Benyan Luo
Abstract When listening to speech, low-frequency cortical activity tracks the speech envelope. It remains controversial, however, whether such envelope-tracking neural activity reflects entrainment of neural oscillations or superposition of transient responses evoked by sound features. Recently, it is suggested that the phase of envelope-tracking activity can potentially distinguish entrained oscillations and evoked responses. Here, we analyze the phase of envelope-tracking in humans during passive listening, and observe that the phase lag between cortical activity and speech envelope tends to change linearly across frequency in the θ band (4–8 Hz), suggesting that the θ-band envelope-tracking activity can be readily modeled by evoked responses.
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