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Neural generators of the auditory evoked potential components P3a and P3b


Neural generators of the auditory evoked potential components P3a and P3b

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dc.contributor.author Wronka, Eligiusz [SAP11017473] pl
dc.contributor.author Kaiser, Jan [SAP11003885] pl
dc.contributor.author Coenen, Anton pl
dc.date.accessioned 2015-02-19T17:48:56Z
dc.date.available 2015-02-19T17:48:56Z
dc.date.issued 2012 pl
dc.identifier.issn 0065-1400 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/3222
dc.language eng pl
dc.title Neural generators of the auditory evoked potential components P3a and P3b pl
dc.type JournalArticle pl
dc.description.physical 51-64 pl
dc.description.additional Bibliogr. s. 62-64. Streszcz. ang. Kategoria tekstu: Research paper pl
dc.identifier.weblink http://ane.pl/pdf/7205.pdf pl
dc.abstract.en The aim of the present study was to define the scalp topography of the two subcomponents of the P3 component of the auditory evoked potential elicited in a three-stimulus oddball paradigm and to identify their cortical generators using the standardized low resolution electromagnetic tomography (sLORETA). Subjects were presented with a random sequence of auditory stimuli and instructed to respond to an infrequently occurring target stimulus inserted into a sequence of frequent standard and rare non-target stimuli. Results show that the magnitude of the frontal P3a is determined by the relative physical difference among stimuli, as it was larger for the stimulus more deviant from the standard. Major neural generators of the P3a were localized within frontal cortex and anterior cingulate gyrus. In contrast to this, the P3b, showing maximal amplitude at parietal locations, was larger for stimuli demanding a response than for the rare non-target. Major sources of the P3b included the superior parietal lobule and the posterior part of the cingulate gyrus. Our findings are in line with the hypothesis that P3a is related to alerting activity during the initial allocation of attention, while P3b is related to activation of a posterior network when the neuronal model of perceived stimulation is compared with the attentional trace. pl
dc.subject.en ERP pl
dc.subject.en source localization pl
dc.subject.en P3a pl
dc.subject.en P3b pl
dc.description.volume 72 pl
dc.description.number 1 pl
dc.identifier.eissn 1689-0035 pl
dc.title.journal Acta Neurobiologiae Experimentalis pl
dc.language.container eng pl
dc.date.accession 2015-08-31 pl
dc.affiliation Wydział Filozoficzny : Instytut Psychologii pl
dc.subtype Article pl
dc.rights.original OTHER; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0; pl
.pointsMNiSW [2012 A]: 15

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