EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.

Previous studies indicated that empty time intervals are better discriminated in the auditory than in the visual modality, and when delimited by signals delivered from the same (intramodal intervals) rather than from different sensory modalities (intermodal intervals). The present electrophysiologic...

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Autores principales:	Emilie Gontier, Emi Hasuo, Takako Mitsudo, Simon Grondin
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/22222674e5824920af47110e1c321783
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spelling	oai:doaj.org-article:22222674e5824920af47110e1c3217832021-11-18T08:58:20ZEEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.1932-620310.1371/journal.pone.0074073https://doaj.org/article/22222674e5824920af47110e1c3217832013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24009766/?tool=EBIhttps://doaj.org/toc/1932-6203Previous studies indicated that empty time intervals are better discriminated in the auditory than in the visual modality, and when delimited by signals delivered from the same (intramodal intervals) rather than from different sensory modalities (intermodal intervals). The present electrophysiological study was conducted to determine the mechanisms which modulated the performances in inter- and intramodal conditions. Participants were asked to categorise as short or long empty intervals marked by auditory (A) and/or visual (V) signals (intramodal intervals: AA, VV; intermodal intervals: AV, VA). Behavioural data revealed that the performances were higher for the AA intervals than for the three other intervals and lower for inter- compared to intramodal intervals. Electrophysiological results indicated that the CNV amplitude recorded at fronto-central electrodes increased significantly until the end of the presentation of the long intervals in the AA conditions, while no significant change in the time course of this component was observed for the other three modalities of presentation. They also indicated that the N1 and P2 amplitudes recorded after the presentation of the signals which delimited the beginning of the intervals were higher for the inter- (AV/VA) compared to the intramodal intervals (AA/VV). The time course of the CNV revealed that the high performances observed with AA intervals would be related to the effectiveness of the neural mechanisms underlying the processing of the ongoing interval. The greater amplitude of the N1 and P2 components during the intermodal intervals suggests that the weak performances observed in these conditions would be caused by an attentional bias induced by the cognitive load and the necessity to switch between modalities.Emilie GontierEmi HasuoTakako MitsudoSimon GrondinPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 8, p e74073 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Emilie Gontier Emi Hasuo Takako Mitsudo Simon Grondin EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.
description	Previous studies indicated that empty time intervals are better discriminated in the auditory than in the visual modality, and when delimited by signals delivered from the same (intramodal intervals) rather than from different sensory modalities (intermodal intervals). The present electrophysiological study was conducted to determine the mechanisms which modulated the performances in inter- and intramodal conditions. Participants were asked to categorise as short or long empty intervals marked by auditory (A) and/or visual (V) signals (intramodal intervals: AA, VV; intermodal intervals: AV, VA). Behavioural data revealed that the performances were higher for the AA intervals than for the three other intervals and lower for inter- compared to intramodal intervals. Electrophysiological results indicated that the CNV amplitude recorded at fronto-central electrodes increased significantly until the end of the presentation of the long intervals in the AA conditions, while no significant change in the time course of this component was observed for the other three modalities of presentation. They also indicated that the N1 and P2 amplitudes recorded after the presentation of the signals which delimited the beginning of the intervals were higher for the inter- (AV/VA) compared to the intramodal intervals (AA/VV). The time course of the CNV revealed that the high performances observed with AA intervals would be related to the effectiveness of the neural mechanisms underlying the processing of the ongoing interval. The greater amplitude of the N1 and P2 components during the intermodal intervals suggests that the weak performances observed in these conditions would be caused by an attentional bias induced by the cognitive load and the necessity to switch between modalities.
format	article
author	Emilie Gontier Emi Hasuo Takako Mitsudo Simon Grondin
author_facet	Emilie Gontier Emi Hasuo Takako Mitsudo Simon Grondin
author_sort	Emilie Gontier
title	EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.
title_short	EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.
title_full	EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.
title_fullStr	EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.
title_full_unstemmed	EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.
title_sort	eeg investigations of duration discrimination: the intermodal effect is induced by an attentional bias.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/22222674e5824920af47110e1c321783
work_keys_str_mv	AT emiliegontier eeginvestigationsofdurationdiscriminationtheintermodaleffectisinducedbyanattentionalbias AT emihasuo eeginvestigationsofdurationdiscriminationtheintermodaleffectisinducedbyanattentionalbias AT takakomitsudo eeginvestigationsofdurationdiscriminationtheintermodaleffectisinducedbyanattentionalbias AT simongrondin eeginvestigationsofdurationdiscriminationtheintermodaleffectisinducedbyanattentionalbias
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EEG investigations of duration discrimination: the intermodal effect is induced by an attentional bias.

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