Attentional modulation of auditory steady-state responses.

Auditory selective attention enables task-relevant auditory events to be enhanced and irrelevant ones suppressed. In the present study we used a frequency tagging paradigm to investigate the effects of attention on auditory steady state responses (ASSR). The ASSR was elicited by simultaneously prese...

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Autores principales:	Yatin Mahajan, Chris Davis, Jeesun Kim
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/15bc830d498e4e018511f0d6fbf95891
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id	oai:doaj.org-article:15bc830d498e4e018511f0d6fbf95891
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spelling	oai:doaj.org-article:15bc830d498e4e018511f0d6fbf958912021-11-25T05:55:40ZAttentional modulation of auditory steady-state responses.1932-620310.1371/journal.pone.0110902https://doaj.org/article/15bc830d498e4e018511f0d6fbf958912014-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0110902https://doaj.org/toc/1932-6203Auditory selective attention enables task-relevant auditory events to be enhanced and irrelevant ones suppressed. In the present study we used a frequency tagging paradigm to investigate the effects of attention on auditory steady state responses (ASSR). The ASSR was elicited by simultaneously presenting two different streams of white noise, amplitude modulated at either 16 and 23.5 Hz or 32.5 and 40 Hz. The two different frequencies were presented to each ear and participants were instructed to selectively attend to one ear or the other (confirmed by behavioral evidence). The results revealed that modulation of ASSR by selective attention depended on the modulation frequencies used and whether the activation was contralateral or ipsilateral. Attention enhanced the ASSR for contralateral activation from either ear for 16 Hz and suppressed the ASSR for ipsilateral activation for 16 Hz and 23.5 Hz. For modulation frequencies of 32.5 or 40 Hz attention did not affect the ASSR. We propose that the pattern of enhancement and inhibition may be due to binaural suppressive effects on ipsilateral stimulation and the dominance of contralateral hemisphere during dichotic listening. In addition to the influence of cortical processing asymmetries, these results may also reflect a bias towards inhibitory ipsilateral and excitatory contralateral activation present at the level of inferior colliculus. That the effect of attention was clearest for the lower modulation frequencies suggests that such effects are likely mediated by cortical brain structures or by those in close proximity to cortex.Yatin MahajanChris DavisJeesun KimPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 10, p e110902 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yatin Mahajan Chris Davis Jeesun Kim Attentional modulation of auditory steady-state responses.
description	Auditory selective attention enables task-relevant auditory events to be enhanced and irrelevant ones suppressed. In the present study we used a frequency tagging paradigm to investigate the effects of attention on auditory steady state responses (ASSR). The ASSR was elicited by simultaneously presenting two different streams of white noise, amplitude modulated at either 16 and 23.5 Hz or 32.5 and 40 Hz. The two different frequencies were presented to each ear and participants were instructed to selectively attend to one ear or the other (confirmed by behavioral evidence). The results revealed that modulation of ASSR by selective attention depended on the modulation frequencies used and whether the activation was contralateral or ipsilateral. Attention enhanced the ASSR for contralateral activation from either ear for 16 Hz and suppressed the ASSR for ipsilateral activation for 16 Hz and 23.5 Hz. For modulation frequencies of 32.5 or 40 Hz attention did not affect the ASSR. We propose that the pattern of enhancement and inhibition may be due to binaural suppressive effects on ipsilateral stimulation and the dominance of contralateral hemisphere during dichotic listening. In addition to the influence of cortical processing asymmetries, these results may also reflect a bias towards inhibitory ipsilateral and excitatory contralateral activation present at the level of inferior colliculus. That the effect of attention was clearest for the lower modulation frequencies suggests that such effects are likely mediated by cortical brain structures or by those in close proximity to cortex.
format	article
author	Yatin Mahajan Chris Davis Jeesun Kim
author_facet	Yatin Mahajan Chris Davis Jeesun Kim
author_sort	Yatin Mahajan
title	Attentional modulation of auditory steady-state responses.
title_short	Attentional modulation of auditory steady-state responses.
title_full	Attentional modulation of auditory steady-state responses.
title_fullStr	Attentional modulation of auditory steady-state responses.
title_full_unstemmed	Attentional modulation of auditory steady-state responses.
title_sort	attentional modulation of auditory steady-state responses.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/15bc830d498e4e018511f0d6fbf95891
work_keys_str_mv	AT yatinmahajan attentionalmodulationofauditorysteadystateresponses AT chrisdavis attentionalmodulationofauditorysteadystateresponses AT jeesunkim attentionalmodulationofauditorysteadystateresponses
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Attentional modulation of auditory steady-state responses.

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