Role of Alpha Oscillations During Short Time Memory Task Investigated by Graph Based Partitioning

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dc.contributor.authorAydin, Cagatay
dc.contributor.authorOktay, Oytun
dc.contributor.authorGunebakan, Adem Umut
dc.contributor.authorAdemoglu, Ahmet
dc.contributor.authorCiftci, Rifat Koray
dc.coverage.issue1cs
dc.coverage.volume22cs
dc.date.accessioned2015-01-20T14:14:15Z
dc.date.available2015-01-20T14:14:15Z
dc.date.issued2013-04cs
dc.description.abstractIn this study, we investigate the clustering pattern of alpha band (8 Hz - 12 Hz) electroencephalogram (EEG) oscillations obtained from healthy individuals during a short time memory task with 3 different memory loads. The retention period during which subjects were asked to memorize a pattern in a square matrix is analyzed with a graph theoretical approach. The functional coupling among EEG electrodes are quantified via mutual information in the time-frequency plane. A spectral clustering algorithm followed by bootstrapping is used to parcellate memory related circuits and for identifying significant clusters in the brain. The main outcome of the study is that the size of the significant clusters formed by alpha oscillations decreases as the memory load increases. This finding corroborates the active inhibition hypothesis about alpha oscillations.en
dc.formattextcs
dc.format.extent123-131cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2013, vol. 22, č. 1, s. 123-131. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/36807
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2013/13_01_0123_0131.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectEEGen
dc.subjectBrainen
dc.subjectGraph Theoryen
dc.subjectMemoryen
dc.subjectSpectral Clusteringen
dc.subjectInformation Theoryen
dc.titleRole of Alpha Oscillations During Short Time Memory Task Investigated by Graph Based Partitioningen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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