θ-Band Cortical Tracking of the Speech Envelope Shows the Linear Phase Property.
eNeuro
; 8(4)2021.
Article
em En
| MEDLINE
| ID: mdl-34380659
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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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Percepção da Fala
/
Gastrópodes
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article