Evaluation of Brain Electrical Activity of Visual Working Memory with Time-Frequency Analysis

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dc.authoridEskikurt, Gökçer/0000-0003-4898-8639
dc.authorwosidEskikurt, Gökçer/J-4772-2018
dc.contributor.authorEskikurt, Gokcer
dc.contributor.authorDuru, Adil Deniz
dc.contributor.authorErmutlu, Numan
dc.contributor.authorIsoglu-Alkac, Ummuhan
dc.date.accessioned2024-05-19T14:50:21Z
dc.date.available2024-05-19T14:50:21Z
dc.date.issued2024
dc.departmentİstinye Üniversitesien_US
dc.description.abstractThe term visual working memory (VWM) refers to the temporary storage of visual information. In electrophysiological recordings during the change detection task which relates to VWM, contralateral negative slow activity was detected. It was found to occur during the information is kept in memory and it was called contralateral delay activity. In this study, the characteristics of electroencephalogram frequencies of the contralateral and ipsilateral responses in the retention phase of VWM were evaluated by using time-frequency analysis (discrete wavelet transform [DWT]) in the change detection task. Twenty-six volunteers participated in the study. Event-related brain potentials (ERPs) were examined, and then a time-frequency analysis was performed. A statistically significant difference between contralateral and ipsilateral responses was found in the ERP. DWT showed a statistically significant difference between contralateral and ipsilateral responses in the delta and theta frequency bands range. When volunteers were grouped as either high or low VWM capacity the time-frequency analysis between these groups revealed that high memory capacity groups have a significantly higher negative coefficient in alpha and beta frequency bands. This study showed that during the retention phase delta and theta bands may relate to visual memory retention and alpha and beta bands may reflect individual memory capacity.en_US
dc.description.sponsorshipScientific Research Project Coordination Unit of Istanbul University [49203]en_US
dc.description.sponsorshipThe author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Scientific Research Project Coordination Unit of Istanbul University (Grant number 49203.).en_US
dc.identifier.doi10.1177/15500594231224014
dc.identifier.issn1550-0594
dc.identifier.issn2169-5202
dc.identifier.pmid38225169en_US
dc.identifier.scopus2-s2.0-85182452958en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org10.1177/15500594231224014
dc.identifier.urihttps://hdl.handle.net/20.500.12713/5678
dc.identifier.wosWOS:001142753900001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSage Publications Incen_US
dc.relation.ispartofClinical Eeg and Neuroscienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmz20240519_kaen_US
dc.subjectVisual Working Memoryen_US
dc.subjectChange Detectionen_US
dc.subjectDiscrete Wavelet Transformen_US
dc.subjectEvent-Related Potentialsen_US
dc.titleEvaluation of Brain Electrical Activity of Visual Working Memory with Time-Frequency Analysisen_US
dc.typeArticleen_US

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