Cognitive task demands modulate the sensitivity of the human cochlea.

Frontiers in Psychology
David W SmithAndreas Keil

Abstract

Recent studies lead to the conclusion that focused attention, through the activity of corticofugal and medial olivocochlear (MOC) efferent pathways, modulates activity at the most peripheral aspects of the auditory system within the cochlea. In two experiments, we investigated the effects of different intermodal attention manipulations on the response of outer hair cells (OHCs), and the control exerted by the MOC efferent system. The effect of the MOCs on OHC activity was characterized by measuring the amplitude and rapid adaptation time course of distortion product otoacoustic emissions (DPOAEs). In the first, DPOAE recordings were compared while participants were reading a book and counting the occurrence of the letter "a" (auditory-ignoring) and while counting either short- or long-duration eliciting tones (auditory-attending). In the second, DPOAEs were recorded while subjects watched muted movies with subtitles (auditory-ignoring/visual distraction) and were compared with DPOAEs recorded while subjects counted the same tones (auditory-attending) as in Experiment 1. In both Experiments 1 and 2, the absolute level of the averaged DPOAEs recorded during the auditory-ignoring condition was statistically higher than that record...Continue Reading

Citations

Aug 29, 2013·Hearing Research·Emily Caporello Bluvas, Timothy Q Gentner
Jan 1, 2014·Journal of Integrative Neuroscience·Aravind Kumar NamasivayamPascal van Lieshout
Oct 11, 2014·The European Journal of Neuroscience·Sridhar SrinivasanDavid W Smith
Oct 21, 2015·Frontiers in Systems Neuroscience·Gonzalo Terreros, Paul H Delano
Mar 13, 2015·Frontiers in Systems Neuroscience·David W Smith, Andreas Keil
Jan 8, 2019·PloS One·Constantino D DragicevicPaul H Delano
Nov 15, 2017·Journal of the Association for Research in Otolaryngology : JARO·James D Lewis
May 17, 2017·Frontiers in Psychology·Gary Lupyan
May 1, 2020·Frontiers in Neuroscience·Lars RieckeFederico De Martino
Apr 21, 2017·Frontiers in Psychology·Anna C BoldersPieter Jan M Stallen
Dec 14, 2018·The Journal of the Acoustical Society of America·Jordan A BeimMagdalena Wojtczak
Apr 11, 2018·Frontiers in Neurology·Enrique A Lopez-Poveda
Feb 9, 2021·Frontiers in Neural Circuits·Alexander Asilador, Daniel A Llano
May 13, 2021·Journal of Neurophysiology·Bruno MarcenaroPaul H Delano

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