Right frontal stroke: extra-frontal lesions, executive functioning and impulsive behaviour

• Autor(a) principal: Scheffer,Morgana
• Data de Publicação: 2016
• Outros Autores: Kroeff,Chrystian, Steigleder,Bibiana Gallas, Klein,Lidiane Andreza, Grassi-Oliveira,Rodrigo, Almeida,Rosa Maria Martins de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Psicologia (Universidade Federal do Rio Grande do Sul. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722016000105105
• topic: Cerebrovascular disease; Cognition; Impulsive behaviour

Abstract The aim of this study was to evaluate executive functioning (EF) and impulsiveness in three groups of people aged 30 to 79 years: post-frontal stroke (n= 13) and post-extra-frontal chronic stroke of the right hemisphere (n= 31) and control (n= 38). The years of education varied between the groups was as follows, frontal lesion group:M= 12 (SD= 6.11); extra-frontal lesion group: M = 9.06 (SD = 4.94); and control: M= 9.61 (SD= 4.24) years. The following instruments were used: Behavioural Assessment Dysexecutive Syndrome, Wisconsin Card Sorting Test (WSCT), Barratt Impulsivity Scale, Impulsivity Evaluation Scale, Delay Descounting Task and Go/No-Go Task. We found differences in EF between the extra-frontal lesion group and the control group with respect to cognitive flexibility (p= .018); number of WCST trials (p= .018); WCST perseverative errors (p= .014) and omission by impulsivity errors on the go/no-go task for 250 ms (p= .008) and 1750 ms trials (p= .006). The frontal lesion group made more errors of omission than the control group in the 1750 ms go/no-go trials (p= .006). These results suggest that extra-frontal lesions impair EF by influencing attentional impulsivity.