Transcranial direct current stimulation decreases P3 amplitude and inherent Delta activity during a waiting impulsivity paradigm: Crossover study

dc.contributor.authorMendes, Augusto J.
dc.contributor.authorGaldo-Álvarez, Santiago
dc.contributor.authorLema, Alberto
dc.contributor.authorCarvalho, Sandra
dc.contributor.authorLeite, Jorge
dc.date.accessioned2024-04-04T09:31:25Z
dc.date.available2024-04-04T09:31:25Z
dc.date.issued2024-02-07
dc.description.abstractThe inability to wait for a target before initiating an action (i.e., waiting impulsivity) is one of the main features of addictive behaviors. Current interventions for addiction, such as transcranial Direct Current Stimulation (tDCS), have been suggested to improve this inability. Nonetheless, the effects of tDCS on waiting impulsivity and underlying electrophysiological (EEG) markers are still not clear. Therefore, this study aimed to evaluate the effects of neuromodulation over the right inferior frontal gyrus (rIFG) on the behavior and EEG markers of reward anticipation (i.e., cue and target-P3 and underlying delta/theta power) during a premature responding task. For that, forty healthy subjects participated in two experimental sessions, where they received active and sham tDCS over the rIFG combined with EEG recording during the task. To evaluate transfer effects, participants also performed two control tasks to assess delay discounting and motor inhibition. The active tDCS decreased the cue-P3 and target-P3 amplitudes, as well as delta power during target-P3. While no tDCS effects were found for motor inhibition, active tDCS increased the discounting of future rewards when compared to sham. These findings suggest a tDCS-induced modulation of the P3 component and underlying oscillatory activity during waiting impulsivity and the discounting of future rewards.
dc.identifier.citationMendes, A., Galdo-Álvarez, S., Lema, A., Carvalho, S., & Leite, J. (2024). Transcranial direct current stimulation decreases P3 amplitude and inherent Delta activity during a waiting impulsivity paradigm: Crossover study. Brain Sciences, 14(2), 168-185. https://doi.org/10.3390/brainsci14020168. Repositório Institucional UPT. https://hdl.handle.net/11328/5564
dc.identifier.issn2076-3425
dc.identifier.urihttps://hdl.handle.net/11328/5564
dc.language.isoeng
dc.publisherMDPI - Multidisciplinary Digital Publishing Institute
dc.relation.hasversionhttps://doi.org/10.3390/brainsci14020168
dc.rightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectWaiting impulsivity
dc.subjectPremature responses
dc.subjecttDCS
dc.subjectrIFG
dc.subjectP3
dc.subjectDelta
dc.subjectTheta
dc.subject.fosCiências Sociais - Psicologia
dc.subject.ods03 - good health and well-being
dc.subject.ods04 - quality education
dc.titleTranscranial direct current stimulation decreases P3 amplitude and inherent Delta activity during a waiting impulsivity paradigm: Crossover study
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage185
oaire.citation.issue2
oaire.citation.startPage168
oaire.citation.titleBrain Sciences
oaire.citation.volume14
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.affiliation.nameI2P - Instituto Portucalense de Psicologia
person.familyNameLeite
person.givenNameJorge
person.identifier.ciencia-idA71F-2404-41CE
person.identifier.gsid03piNtgAAAAJ
person.identifier.orcid0000-0002-0323-9012
person.identifier.ridE-4404-2013
person.identifier.scopus-author-id47761976700
relation.isAuthorOfPublication9dc1f0ec-b563-4cf4-b876-aafc02d0db23
relation.isAuthorOfPublication.latestForDiscovery9dc1f0ec-b563-4cf4-b876-aafc02d0db23

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