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Transcranial alternating current stimulation affects resting-state functional connectivity
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Seraji, Masoud. Transcranial alternating current stimulation affects resting-state functional connectivity. Retrieved from https://doi.org/doi:10.7282/t3-eym0-nx74

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TitleTranscranial alternating current stimulation affects resting-state functional connectivity
NameSeraji, Masoud (author); Krekelberg, Bart (chair); Huerta Ocampo, Icnelia IHC (member); Polack, Pierre-Olivier POP (member); Pare, Denis DP (member); Rutgers University; Graduate School - Newark
Date Created2021
Other Date2021-10 (degree)
SubjectNanoscience, Neuroscience, Brain stimulation, tACS
Extent1 online resource (vi, 28 pages) : illustrations
DescriptionTranscranial alternating current stimulation (tACS) is a non-invasive tool for cognitive enhancement and clinical applications. However, the physiological effects of tACS are complex and poorly understood. We used the BOLD signal in the resting state as a tool to examine the effect of tACS on the brain. Specifically, we investigated how tACS changed resting-state functional connectivity (FC). We acquired fMRI data from 31 subjects while applying tACS to the right temperoparietal junction (rTPJ), left ventrolateral prefrontal cortex (VLPFC), and both at the same time. All the montages were in open eyes resting state with a central fixation for eight minutes without a task for the subjects. We extracted the BOLD signal from 264 ROIs in the Petersen atlas and then computed the global brain connectivity (GBC) for rtpj and vlpfc seeds separately for each subject and each montage. In the next step, we computed the between-network global connectivity (BGC) for these two seeds and eight main networks. Under the influence of tACS, we did not observe any changes in GBC, but BGC measures showed significant changes just in the rtpj seed after we excluded subjects that did not have any stimulation condition before SHAM condition. We concluded that the effects of tACS on resting-state FC are different when the effects are observed globally vs. locally. Also, to see the effect of tACS on the brain, especially in the resting-state FC, we should be careful about the experimental circumstances.
NoteM.S.
NoteIncludes bibliographical references
Genretheses
Persistent URLhttps://doi.org/doi:10.7282/t3-eym0-nx74
LanguageEnglish
CollectionGraduate School - Newark Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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