Two-channel recording of auditory-evoked potentials to detect age-related deficits in temporal processing.

Hearing Research
A Parthasarathy, E L Bartlett

Abstract

Auditory brainstem responses (ABRs), and envelope and frequency following responses (EFRs and FFRs) are widely used to study aberrant auditory processing in conditions such as aging. We have previously reported age-related deficits in auditory processing for rapid amplitude modulation (AM) frequencies using EFRs recorded from a single channel. However, sensitive testing of EFRs along a wide range of modulation frequencies is required to gain a more complete understanding of the auditory processing deficits. In this study, ABRs and EFRs were recorded simultaneously from two electrode configurations in young and old Fischer-344 rats, a common auditory aging model. Analysis shows that the two channels respond most sensitively to complementary AM frequencies. Channel 1, recorded from Fz to mastoid, responds better to faster AM frequencies in the 100-700 Hz range of frequencies, while Channel 2, recorded from the inter-aural line to the mastoid, responds better to slower AM frequencies in the 16-100 Hz range. Simultaneous recording of Channels 1 and 2 using AM stimuli with varying sound levels and modulation depths show that age-related deficits in temporal processing are not present at slower AM frequencies but only at more rapid o...Continue Reading

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Citations

May 23, 2014·Journal of the Association for Research in Otolaryngology : JARO·Aravindakshan ParthasarathyEdward L Bartlett
Feb 26, 2016·Journal of the Association for Research in Otolaryngology : JARO·Aravindakshan ParthasarathyEdward L Bartlett
Sep 2, 2015·Journal of the Association for Research in Otolaryngology : JARO·Luke A ShaheenM Charles Liberman
Feb 28, 2016·Journal of the Association for Research in Otolaryngology : JARO·Andrew KingChristopher J Plack
Nov 12, 2013·Developmental Neurobiology·Yamini Venkataraman, Edward L Bartlett
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Nov 5, 2016·The European Journal of Neuroscience·Björn HerrmannEdward L Bartlett
May 15, 2015·Journal of Neurophysiology·Chi-Wing NgGregg H Recanzone
Dec 22, 2020·Frontiers in Aging Neuroscience·Ehsan Darestani FarahaniAstrid van Wieringen
Nov 12, 2015·Audiology Research·Pavel Prado-GutierrezEduardo Martínez-Montes
Mar 4, 2021·Journal of Neurophysiology·Anita M MepaniStéphane F Maison
Dec 17, 2018·Neuroscience·Aravindakshan ParthasarathySharon G Kujawa
Sep 2, 2021·Journal of Neurophysiology·Emily X HanEdward L Bartlett

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