Gray matter abnormalities in the inhibitory circuitry of young binge drinkers: a voxel-based morphometry study

• Autor(a) principal: Sousa, Sónia Silva
• Data de Publicação: 2017
• Outros Autores: Sampaio, Adriana, Marques, Paulo César Gonçalves, Gonçalves, Óscar F., Crego, Alberto
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/1822/52206
• topic: Binge drinking; Gray matter; Inhibitory control; Self-regulation; Impulsivity; Adolescence; College-students; Voxel-based morphometry; Social Sciences

Binge drinking (BD) is defined as a pattern of high alcohol intake in a short time followed by periods of abstinence. This behavior is very common in adolescence, a developmental stage characterized by the maturation of the prefrontal and striatal networks, important circuits underlying the capacity to control and regulate the behavior. In this study, we conducted a voxel-based morphometry (VBM) analysis, using a region of interest (ROI) analysis of brain regions associated with inhibitory control and self-regulatory processes, in a group of 36 young college students, 20 binge drinkers (BDs) and 16 alcohol abstinent controls (AAC). Results showed increased gray matter (GM) densities in the left middle frontal gyrus in BDs, when compared with alcohol abstinent controls. Additionally, a ROI-based Pearson analysis documented positive correlations between the left middle frontal gyrus GM densities and the self-control subscale of the Barratt Impulsiveness Scale (BIS), in the BD group. These findings highlight abnormalities in core brain regions associated with self-regulatory processes in the BD group.