Attentional Modulation of Envelope-Following Responses at Lower (93 –109 Hz) but Not Higher (217–233 Hz) Modulation Rates

AbstractDirecting attention to sounds of different frequencies allows listeners to perceive a sound of interest, like a talker, in a mixture. Whether cortically generated frequency-specific attention affects responses as low as the auditory brainstem is currently unclear. Participants attended to either a high- or low-frequency tone stream, which was presented simultaneously and tagged with different amplitude modulation (AM) rates. In a replication design, we showed that envelope-following responses (EFRs) were modulated by attention only when the stimulus AM rate was slow enough for the auditory cortex to track —and not for stimuli with faster AM rates, which are thought to reflect 'purer' brainstem sources. Thus, we found no evidence of frequency-specific attentional modulation th...

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