Age-related changes in envelope-following responses at equalized peripheral or central activation


Previous work has debated about comparisons of hearing abilities faced with alterations in hearing thresholds and evoked potentials between groups following acoustic trauma- or age-related changes. This study compares envelope following responses (EFRs) of young and aged rats when sound levels were matched according to (1) wave I amplitudes of auditory brainstem responses (ABRs) elicited by 8 kHz tones or (2) EFR amplitudes evoked by sinusoidally amplitude modulated (SAM) tones at 100 % depth. Matched wave I amplitudes across age corresponded to approximately 20 dB sound level differences.📍

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