Effects of transcranial direct current stimulation on inhibition-related oscillatory brain activity during an emotional antisaccade task

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dc.authorid0000-0002-7796-1841
dc.authorid0000-0003-4729-8556
dc.authorid0000-0002-6219-1776
dc.authorid0000-0002-5674-3634
dc.authorid0000-0001-6870-4758
dc.contributor.authorSütçübaşı, Bernisen_US
dc.contributor.authorKüçük, Zeynepen_US
dc.contributor.authorTarman, Güliz Zeynepen_US
dc.contributor.authorMetin, Barışen_US
dc.contributor.authorSarı, Bernaen_US
dc.date.accessioned2026-01-22T07:59:15Z
dc.date.available2026-01-22T07:59:15Z
dc.date.issued2025-12
dc.departmentIşık Üniversitesi, İktisadi, İdari ve Sosyal Bilimler Fakültesi, Psikoloji Bölümüen_US
dc.departmentIşık University, Faculty of Economics, Administrative and Social Sciences, Department of Psychologyen_US
dc.description.abstractObjective: Previous studies have shown that transcranial direct current stimulation (tDCS) applied to the dorsolateral prefrontal cortex (dlPFC) can enhance attentional performance and influence emotional processing. However, the neural mechanisms underlying these effects are not fully understood. This study aimed to investigate oscillatory changes following tDCS over the dlPFC, with the hypothesis that anodal stimulation of the right dlPFC would modulate inhibition-related oscillations in the presence of threatening faces compared with left dlPFC stimulation. Method: Thirty-six healthy participants underwent bilateral tDCS to the dlPFC. One group received anodal tDCS to the right dlPFC and cathodal to the left dlPFC, while the second group received the opposite montage. A control group received sham stimulation. Before and after stimulation, behavioral performance and event-related theta oscillations were recorded during an antisaccade task involving neutral and angry faces. Results: Compared to the left-dlPFC group, the right-dlPFC group showed lower theta responses at F3 after anodal stimulation, particularly during antisaccade trials with angry faces, which are known to impose higher inhibitory demands due to threat salience. No group differences were found in saccade latencies. These findings suggest that anodal right dlPFC stimulation modulates oscillatory activity related to inhibitory control under emotionally salient conditions. Conclusion: A decrease in theta oscillations following anodal tDCS over the right dlPFC may indicate enhanced inhibitory control during the processing of threatening stimuli. These results point to a potential role of dlPFC-targeted tDCS in regulating cognitive control and emotional processing, particularly in individuals with difficulties in these domains. However, the directionality and causality of these effects cannot be conclusively established due to limitations of the current study design.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationSütçübaşı, B., Küçük, Z., Tarman, G. Z., Metin, B. & Sarı, B. (2025). Effects of transcranial direct current stimulation on inhibition-related oscillatory brain activity during an emotional antisaccade task. Dusunen Adam Journal of Psychiatry and Neurological Sciences, 38(4), 234-244. https://doi.org/10.14744/DAJPNS.2025.00299en_US
dc.identifier.doi10.14744/DAJPNS.2025.00299
dc.identifier.endpage244
dc.identifier.issn1018-8681
dc.identifier.issn1309-5749
dc.identifier.issue4
dc.identifier.scopus2-s2.0-105027287604
dc.identifier.scopusqualityQ4
dc.identifier.startpage234
dc.identifier.urihttps://hdl.handle.net/11729/6945
dc.identifier.urihttps://doi.org/10.14744/DAJPNS.2025.00299
dc.identifier.volume38
dc.identifier.wosWOS:001650406200005
dc.identifier.wosqualityQ4
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakEmerging Sources Citation Index (ESCI)en_US
dc.institutionauthorKüçük, Zeynepen_US
dc.institutionauthorid0000-0003-4729-8556
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherKare Publishingen_US
dc.relation.ispartofDusunen Adam Journal of Psychiatry and Neurological Sciencesen_US
dc.relation.publicationcategoryÖn Baskı – Uluslararası – Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAntisaccadeen_US
dc.subjectEvent-related oscillationsen_US
dc.subjectTheta banden_US
dc.subjectTranscranial direct current stimulationen_US
dc.titleEffects of transcranial direct current stimulation on inhibition-related oscillatory brain activity during an emotional antisaccade tasken_US
dc.typeArticleen_US
dspace.entity.typePublicationen_US

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