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Prefrontal tDCS modulates risk-taking in male violent offenders
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Prefrontal tDCS modulates risk-taking in male violent offenders
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Journal Article
Prefrontal tDCS modulates risk-taking in male violent offenders
2024
Overview
Detrimental decision-making is a major problem among violent offenders. Non-invasive brain stimulation offers a promising method to directly influence decision-making and has already been shown to modulate risk-taking in non-violent controls. We hypothesize that anodal transcranial direct current stimulation (tDCS) over the right dorsolateral prefrontal cortex beneficially modulates the neural and behavioral correlates of risk-taking in a sample of violent offenders. We expect offenders to show more risky decision-making than non-violent controls and that prefrontal tDCS will induce stronger changes in the offender group. In the current study, 22 male violent offenders and 24 male non-violent controls took part in a randomized double-blind sham-controlled cross-over study applying tDCS over the right dorsolateral prefrontal cortex. Subsequently, participants performed the Balloon Analogue Risk Task (BART) during functional magnetic resonance imaging (fMRI). Violent offenders showed significantly less optimal decision-making compared to non-violent controls. Active tDCS increased prefrontal activity and improved decision-making only in violent offenders but not in the control group. Also, in offenders only, prefrontal tDCS influenced functional connectivity between the stimulated area and other brain regions such as the thalamus. These results suggest baseline dependent effects of tDCS and pave the way for treatment options of disadvantageous decision-making behavior in this population.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Adult
/ Decision Making - physiology
/ Dorsolateral Prefrontal Cortex - physiology
/ Electrical stimulation of the brain
/ ESB
/ fMRI
/ Functional magnetic resonance imaging
/ Humanities and Social Sciences
/ Humans
/ Male
/ Prefrontal Cortex - diagnostic imaging
/ Prefrontal Cortex - physiology
/ Science
/ tDCS
