Mismatch task conditions and error related ERPs

Karanasiou, IS; Papageorgiou, C; Tsianaka, EI; Kyprianou, M; Matsopoulos, GK; Ventouras, EM; Uzunoglu, NK

dc.contributor.author	Karanasiou, IS	en
dc.contributor.author	Papageorgiou, C	en
dc.contributor.author	Tsianaka, EI	en
dc.contributor.author	Kyprianou, M	en
dc.contributor.author	Matsopoulos, GK	en
dc.contributor.author	Ventouras, EM	en
dc.contributor.author	Uzunoglu, NK	en
dc.date.accessioned	2014-03-01T01:33:44Z
dc.date.available	2014-03-01T01:33:44Z
dc.date.issued	2010	en
dc.identifier.issn	1744-9081	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20568
dc.subject	event-related potential erp	en
dc.subject	Frontal Lobe	en
dc.subject	Healthy Volunteer	en
dc.subject	Time Window	en
dc.subject.classification	Behavioral Sciences	en
dc.subject.classification	Neurosciences	en
dc.subject.other	adult	en
dc.subject.other	article	en
dc.subject.other	auditory discrimination	en
dc.subject.other	brain mapping	en
dc.subject.other	brain region	en
dc.subject.other	controlled study	en
dc.subject.other	electrode	en
dc.subject.other	electroencephalogram	en
dc.subject.other	event related potential	en
dc.subject.other	feedback system	en
dc.subject.other	female	en
dc.subject.other	frequency discrimination	en
dc.subject.other	frontal lobe	en
dc.subject.other	human	en
dc.subject.other	human experiment	en
dc.subject.other	male	en
dc.subject.other	measurement error	en
dc.subject.other	mismatch negativity	en
dc.subject.other	neuromonitoring	en
dc.subject.other	normal human	en
dc.subject.other	pattern stimulation	en
dc.subject.other	priority journal	en
dc.subject.other	signal detection	en
dc.subject.other	task performance	en
dc.subject.other	waveform	en
dc.title	Mismatch task conditions and error related ERPs	en
heal.type	journalArticle	en
heal.identifier.primary	10.1186/1744-9081-6-14	en
heal.identifier.secondary	http://dx.doi.org/10.1186/1744-9081-6-14	en
heal.identifier.secondary	14	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Background: The N200 component of event related potentials (ERPs) is considered an index of monitoring error related responses. The aim of the present work was to study the effect of mismatch conditions on the subjects' responses in an auditory identification task and their relation to the N200 of stimulus-locked ERPs.Methods: An auditory identification task required to correctly map a horizontal slider onto an active frequency range by selecting a slider position that matched the stimulus tone in each trial. Fourteen healthy volunteers participated in the study and ERPs were recorded by 32 leads.Results: Results showed that the subjects' erroneous responses were equally distributed within trials, but were dependent on mismatch conditions, generated by large differences between the frequencies of the tones of consecutive trials. Erroneous trials showed a significantly greater negativity within the time window of 164-191 ms after stimulus, located mainly at the Cz and Fz electrodes. The LORETA solution showed that maximum activations, as well as maximum differences, were localized mainly at the frontal lobe.Conclusions: These findings suggest that the fronto-central N200 component, conceived an index of ""reorientation of attention"", represents a correlate of an error signal, being produced when representation of the actual response and the required response are compared. Furthermore the magnitude of the amplitude of the N200 rests on the relation between the present and the previous stimulus. © 2010 Karanasiou et al; licensee BioMed Central Ltd.	en
heal.publisher	BIOMED CENTRAL LTD	en
heal.journalName	Behavioral and Brain Functions	en
dc.identifier.doi	10.1186/1744-9081-6-14	en
dc.identifier.isi	ISI:000275781200001	en
dc.identifier.volume	6	en