Cortical-brainstem interplay during speech perception in older adults with and without hearing loss.

ABSTRACT:

Introduction

Real time modulation of brainstem frequency-following responses (FFRs) by online changes in cortical arousal state via the corticofugal (top-down) pathway has been demonstrated previously in young adults and is more prominent in the presence of background noise. FFRs during high cortical arousal states also have a stronger relationship with speech perception. Aging is associated with increased auditory brain responses, which might reflect degraded inhibitory processing within the peripheral and ascending pathways, or changes in attentional control regulation via descending auditory pathways. Here, we tested the hypothesis that online corticofugal interplay is impacted by age-related hearing loss.

Methods

We measured EEG in older adults with normal-

SUBMITTER: Lai J 

PROVIDER: S-EPMC9932544 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature