Figure 3.

mTRF components and sensor spaces for a broadband acoustic envelope of the speech signal (<8 Hz), a delta-band acoustic envelope (0–4 Hz), and a theta-band acoustic envelope (4–8 Hz). The components largely had the temporal structure of a P1-N1-P2 auditory ERP, except that the delta and theta components also acted as time-domain filters to match the neural signal to the frequency content of the envelopes. Violin plots for the delta and theta bands display the strength of neural tracking as a function of talker attention (Targ vs Dist), language groups, and task.