Polarity-dependent transcranial direct current stimulation effects on central auditory processing.

Given the polarity dependent effects of transcranial direct current stimulation (tDCS) in facilitating or inhibiting neuronal processing, and tDCS effects on pitch perception, we tested the effects of tDCS on temporal aspects of auditory processing. We aimed to change baseline activity of the audito...

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Autores principales:	Andrea Ladeira, Felipe Fregni, Camila Campanhã, Cláudia Aparecida Valasek, Dirk De Ridder, André Russwsky Brunoni, Paulo Sérgio Boggio
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fe5a0a628d674adf8e46ff842a0ea64b
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spelling	oai:doaj.org-article:fe5a0a628d674adf8e46ff842a0ea64b2021-11-04T06:07:51ZPolarity-dependent transcranial direct current stimulation effects on central auditory processing.1932-620310.1371/journal.pone.0025399https://doaj.org/article/fe5a0a628d674adf8e46ff842a0ea64b2011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21966519/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Given the polarity dependent effects of transcranial direct current stimulation (tDCS) in facilitating or inhibiting neuronal processing, and tDCS effects on pitch perception, we tested the effects of tDCS on temporal aspects of auditory processing. We aimed to change baseline activity of the auditory cortex using tDCS as to modulate temporal aspects of auditory processing in healthy subjects without hearing impairment. Eleven subjects received 2mA bilateral anodal, cathodal and sham tDCS over auditory cortex in a randomized and counterbalanced order. Subjects were evaluated by the Random Gap Detection Test (RGDT), a test measuring temporal processing abilities in the auditory domain, before and during the stimulation. Statistical analysis revealed a significant interaction effect of time vs. tDCS condition for 4000 Hz and for clicks. Post-hoc tests showed significant differences according to stimulation polarity on RGDT performance: anodal improved 22.5% and cathodal decreased 54.5% subjects' performance, as compared to baseline. For clicks, anodal also increased performance in 29.4% when compared to baseline. tDCS presented polarity-dependent effects on the activity of the auditory cortex, which results in a positive or negative impact in a temporal resolution task performance. These results encourage further studies exploring tDCS in central auditory processing disorders.Andrea LadeiraFelipe FregniCamila CampanhãCláudia Aparecida ValasekDirk De RidderAndré Russwsky BrunoniPaulo Sérgio BoggioPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 9, p e25399 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrea Ladeira Felipe Fregni Camila Campanhã Cláudia Aparecida Valasek Dirk De Ridder André Russwsky Brunoni Paulo Sérgio Boggio Polarity-dependent transcranial direct current stimulation effects on central auditory processing.
description	Given the polarity dependent effects of transcranial direct current stimulation (tDCS) in facilitating or inhibiting neuronal processing, and tDCS effects on pitch perception, we tested the effects of tDCS on temporal aspects of auditory processing. We aimed to change baseline activity of the auditory cortex using tDCS as to modulate temporal aspects of auditory processing in healthy subjects without hearing impairment. Eleven subjects received 2mA bilateral anodal, cathodal and sham tDCS over auditory cortex in a randomized and counterbalanced order. Subjects were evaluated by the Random Gap Detection Test (RGDT), a test measuring temporal processing abilities in the auditory domain, before and during the stimulation. Statistical analysis revealed a significant interaction effect of time vs. tDCS condition for 4000 Hz and for clicks. Post-hoc tests showed significant differences according to stimulation polarity on RGDT performance: anodal improved 22.5% and cathodal decreased 54.5% subjects' performance, as compared to baseline. For clicks, anodal also increased performance in 29.4% when compared to baseline. tDCS presented polarity-dependent effects on the activity of the auditory cortex, which results in a positive or negative impact in a temporal resolution task performance. These results encourage further studies exploring tDCS in central auditory processing disorders.
format	article
author	Andrea Ladeira Felipe Fregni Camila Campanhã Cláudia Aparecida Valasek Dirk De Ridder André Russwsky Brunoni Paulo Sérgio Boggio
author_facet	Andrea Ladeira Felipe Fregni Camila Campanhã Cláudia Aparecida Valasek Dirk De Ridder André Russwsky Brunoni Paulo Sérgio Boggio
author_sort	Andrea Ladeira
title	Polarity-dependent transcranial direct current stimulation effects on central auditory processing.
title_short	Polarity-dependent transcranial direct current stimulation effects on central auditory processing.
title_full	Polarity-dependent transcranial direct current stimulation effects on central auditory processing.
title_fullStr	Polarity-dependent transcranial direct current stimulation effects on central auditory processing.
title_full_unstemmed	Polarity-dependent transcranial direct current stimulation effects on central auditory processing.
title_sort	polarity-dependent transcranial direct current stimulation effects on central auditory processing.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/fe5a0a628d674adf8e46ff842a0ea64b
work_keys_str_mv	AT andrealadeira polaritydependenttranscranialdirectcurrentstimulationeffectsoncentralauditoryprocessing AT felipefregni polaritydependenttranscranialdirectcurrentstimulationeffectsoncentralauditoryprocessing AT camilacampanha polaritydependenttranscranialdirectcurrentstimulationeffectsoncentralauditoryprocessing AT claudiaaparecidavalasek polaritydependenttranscranialdirectcurrentstimulationeffectsoncentralauditoryprocessing AT dirkderidder polaritydependenttranscranialdirectcurrentstimulationeffectsoncentralauditoryprocessing AT andrerusswskybrunoni polaritydependenttranscranialdirectcurrentstimulationeffectsoncentralauditoryprocessing AT paulosergioboggio polaritydependenttranscranialdirectcurrentstimulationeffectsoncentralauditoryprocessing
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Polarity-dependent transcranial direct current stimulation effects on central auditory processing.

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