Transcranial electrical stimulation modulates emotional experience and metabolites in the prefrontal cortex in a donation task.
Humans
Transcranial Direct Current Stimulation
Male
Female
Prefrontal Cortex
/ metabolism
Adult
Emotions
/ physiology
Young Adult
gamma-Aminobutyric Acid
/ metabolism
Glutamic Acid
/ metabolism
Altruism
Glutamine
/ metabolism
Magnetic Resonance Spectroscopy
/ methods
Dorsolateral Prefrontal Cortex
/ metabolism
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
20 06 2024
20 06 2024
Historique:
received:
28
09
2023
accepted:
13
06
2024
medline:
21
6
2024
pubmed:
21
6
2024
entrez:
20
6
2024
Statut:
epublish
Résumé
Understanding the neural, metabolic, and psychological mechanisms underlying human altruism and decision-making is a complex and important topic both for science and society. Here, we investigated whether transcranial Direct Current Stimulation (tDCS) applied to two prefrontal cortex regions, the ventromedial prefrontal cortex (vmPFC, anode) and the right dorsolateral prefrontal cortex (DLPFC, cathode) can induce changes in self-reported emotions and to modulate local metabolite concentrations. We employed in vivo quantitative MR Spectroscopy in healthy adult participants and quantified changes in GABA and Glx (glutamate + glutamine) before and after five sessions of tDCS delivered at 2 mA for 20 min (active group) and 1 min (sham group) while participants were engaged in a charitable donation task. In the active group, we observed increased levels of GABA in vmPFC. Glx levels decreased in both prefrontal regions and self-reported happiness increased significantly over time in the active group. Self-reported guiltiness in both active and sham groups tended to decrease. The results indicate that self-reported happiness can be modulated, possibly due to changes in Glx concentrations following repeated stimulation. Therefore, local changes may induce remote changes in the reward network through interactions with other metabolites, previously thought to be unreachable with noninvasive stimulation techniques.
Identifiants
pubmed: 38902321
doi: 10.1038/s41598-024-64876-x
pii: 10.1038/s41598-024-64876-x
doi:
Substances chimiques
gamma-Aminobutyric Acid
56-12-2
Glutamic Acid
3KX376GY7L
Glutamine
0RH81L854J
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
14271Subventions
Organisme : Conselho Nacional de Desenvolvimento Científico e Tecnológico
ID : 465346/2014
Organisme : Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
ID : E-26/200.872/2018
Informations de copyright
© 2024. The Author(s).
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