RT Journal Article
SR Electronic
T1 θ-Band Cortical Tracking of the Speech Envelope Shows the Linear Phase Property
JF eneuro
JO eNeuro
FD Society for Neuroscience
SP ENEURO.0058-21.2021
DO 10.1523/ENEURO.0058-21.2021
VO 8
IS 4
A1 Jiajie Zou
A1 Chuan Xu
A1 Cheng Luo
A1 Peiqing Jin
A1 Jiaxin Gao
A1 Jingqi Li
A1 Jian Gao
A1 Nai Ding
A1 Benyan Luo
YR 2021
UL http://www.eneuro.org/content/8/4/ENEURO.0058-21.2021.abstract
AB 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.