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Article: FMRI-constrained source analysis of visual P300 in Landolt ring task

TitleFMRI-constrained source analysis of visual P300 in Landolt ring task
Authors
KeywordsConcurrent EEG/fMRI
Dipole
FMRI-constrained source analysis
Landolt ring task
MR-compatible EEG
Visual P300
Issue Date2008
PublisherScience China Press. The Journal's web site is located at http://www.springerlink.com/content/1001-6538/
Citation
Chinese Science Bulletin, 2008, v. 53 n. 1, p. 76-86 How to Cite?
AbstractAn fMRI-constrained source analysis was applied to investigate visual P300 in the Landolt ring task. To study the localization and relative activation timing of P300 generators, we implemented simultaneous EEG/fMRI to identify BOLD signal changes and record 64-channel EEG in 10 subjects during a Landolt ring task inside a 1.5-T fMRI scanner using an MR-compatible EEG recording system. MRI artifact subtraction software was applied to obtain continuous EEG data. Then, the simultaneous collecting of EEG and fMRI was validated in preserving relevant ERPs. The fMRI-constrained source analysis resulted in an 8-dipole solution. The bilateral middle frontal and the right inferior parietal dipole waveforms showed a short latency peak corresponding to the early P300 activity, while the four parietal and the anterior cingulate dipole waveforms showed a long latency peak corresponding to the late P300 activity. The longest latency peak of the anterior cingulate dipole agrees with its role in initiation of motor response after successful target recognition. Target detection in the Landolt ring task produces the strongest and most extensive parietal activation (especially superior parietal activation), which might be due to its particular visual attention switching. © 2008 Science in China Press.
Persistent Identifierhttp://hdl.handle.net/10722/79417
ISSN
2015 Impact Factor: 1.789
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Yen_HK
dc.contributor.authorXu, Ten_HK
dc.contributor.authorWang, Len_HK
dc.contributor.authorHu, Yen_HK
dc.date.accessioned2010-09-06T07:54:27Z-
dc.date.available2010-09-06T07:54:27Z-
dc.date.issued2008en_HK
dc.identifier.citationChinese Science Bulletin, 2008, v. 53 n. 1, p. 76-86en_HK
dc.identifier.issn1001-6538en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79417-
dc.description.abstractAn fMRI-constrained source analysis was applied to investigate visual P300 in the Landolt ring task. To study the localization and relative activation timing of P300 generators, we implemented simultaneous EEG/fMRI to identify BOLD signal changes and record 64-channel EEG in 10 subjects during a Landolt ring task inside a 1.5-T fMRI scanner using an MR-compatible EEG recording system. MRI artifact subtraction software was applied to obtain continuous EEG data. Then, the simultaneous collecting of EEG and fMRI was validated in preserving relevant ERPs. The fMRI-constrained source analysis resulted in an 8-dipole solution. The bilateral middle frontal and the right inferior parietal dipole waveforms showed a short latency peak corresponding to the early P300 activity, while the four parietal and the anterior cingulate dipole waveforms showed a long latency peak corresponding to the late P300 activity. The longest latency peak of the anterior cingulate dipole agrees with its role in initiation of motor response after successful target recognition. Target detection in the Landolt ring task produces the strongest and most extensive parietal activation (especially superior parietal activation), which might be due to its particular visual attention switching. © 2008 Science in China Press.en_HK
dc.languageengen_HK
dc.publisherScience China Press. The Journal's web site is located at http://www.springerlink.com/content/1001-6538/en_HK
dc.relation.ispartofChinese Science Bulletinen_HK
dc.subjectConcurrent EEG/fMRIen_HK
dc.subjectDipoleen_HK
dc.subjectFMRI-constrained source analysisen_HK
dc.subjectLandolt ring tasken_HK
dc.subjectMR-compatible EEGen_HK
dc.subjectVisual P300en_HK
dc.titleFMRI-constrained source analysis of visual P300 in Landolt ring tasken_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1001-6538&volume=53&spage=76&epage=86&date=2008&atitle=fMRI-constrained+source+analysis+of+visual+P300+in+Landolt+ring+tasken_HK
dc.identifier.emailHu, Y:yhud@hku.hken_HK
dc.identifier.authorityHu, Y=rp00432en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11434-008-0060-8en_HK
dc.identifier.scopuseid_2-s2.0-38149118915en_HK
dc.identifier.hkuros141645en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38149118915&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume53en_HK
dc.identifier.issue1en_HK
dc.identifier.spage76en_HK
dc.identifier.epage86en_HK
dc.identifier.isiWOS:000252275900013-
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridLi, Y=14052381600en_HK
dc.identifier.scopusauthoridXu, T=55230607600en_HK
dc.identifier.scopusauthoridWang, L=8934231000en_HK
dc.identifier.scopusauthoridHu, Y=7407116091en_HK

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