Heightened visual attention does not affect inner ear function as measured by otoacoustic emissions
PBN-AR
Instytucja
Instytut Fizjologii i Patologii Słuchu
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
PeerJ (35pkt w roku publikacji)
ISSN
2167-8359
EISSN
Wydawca
PeerJ Ltd.
DOI
Rok publikacji
2017
Numer zeszytu
Strony od-do
e4199
Numer tomu
5
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Słowa kluczowe
angielski
Attention
Contralateral acoustic stimulation
Medial olivocochlear complex
Odd-ball
Otoacoustic emission
Suppression
TEOAE
Visual evoked potential
Open access
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Creative Commons — Uznanie autorstwa
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Język
angielski
Treść
Previous research has indicated that inner ear function might be modulated by visual attention, although the results have not been totally conclusive. Conceivably, modulation of hearing might occur due to stimulation of the cochlea via descending medial olivocochlear (MOC) neurons. The aim of the present study was to test whether increased visual attention caused corresponding changes in inner ear function, which was measured by the strength of otoacoustic emissions (OAEs) recorded from the ear canal in response to a steady train of clicks. To manipulate attention, we asked subjects to attend to, or ignore, visual stimuli delivered according to an odd-ball paradigm. The subjects were presented with two types of visual stimuli: standard and deviant (20% of all stimuli, randomly presented). During a passive part of the experiment, subjects had to just observe a pattern of squares on a computer screen. In an active condition, the subject's task was to silently count the occasional inverted (deviant) pattern on the screen. At all times, visual evoked potentials (VEPs) were used to objectively gauge the subject's state of attention, and OAEs in response to clicks (transiently evoked OAEs, TEOAEs) were used to gauge inner ear function. As a test of descending neural activity, TEOAE levels were evaluated with and without contralateral acoustic stimulation (CAS) by broadband noise, a paradigm known to activate the MOC pathway. Our results showed that the recorded VEPs were, as expected, a good measure of visual attention, but even when attention levels changed there was no corresponding change in TEOAE levels. We conclude that visual attention does not significantly affect inner ear function.
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System-identifier
PX-5a819d76d5defc5e83d5fe15
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