ABSTRACT
INTRODUÇÃO: A discalculia do desenvolvimento (DD) lida com o desempenho matemático prejudicado e afeta as atividades educacionais e do dia a dia das crianças. Há evidências de que a estimulação transcraniana por corrente contínua (ETCC) aplicada ao córtex parietal posterior facilita a estrutura neuronal hipoativa e melhora o desempenho matemático em indivíduos com DD. OBJETIVO: O objetivo deste estudo é investigar se tDCS adjuvante com treinamento convencional de numeramento (CNT) aumentaria as habilidades matemáticas de crianças em idade escolar afetadas com DD. MATERIAIS E MÉTODOS: Treze crianças em idade escolar afetadas com DD receberam tDCS e CNT três sessões por semana por até 2 semanas. Foi dada estimulação anódica esquerda e catódica direita na região P3 / P4, com intensidade de 2mA, combinada com CNT por 30 minutos em um dia. O inventário de diagnóstico de deficiência de aprendizagem (LDDI) foi usado como uma medida de resultado e coletado no início e no final da intervenção de 2 semanas. RESULTADOS: Houve melhora significativa no desempenho matemático de crianças em idade escolar. Os resultados mostram uma melhora estatística e clinicamente significativa após 2 semanas de intervenção. CONCLUSÕES: tDCS combinado com CNT é eficaz para melhorar as habilidades matemáticas de crianças em idade escolar afetadas com DD. Os resultados deste estudo fornecem uma nova perspectiva para a reabilitação de crianças com DD em idade escolar.
INTRODUCTION: Developmental dyscalculia (DD) deals with impaired mathematical performance and affects children's educational and day-to-day activities. There is evidence that transcranial direct current stimulation (tDCS) applied to the posterior parietal cortex facilitates the hypoactive neuronal structure and improves mathematical performance in individuals with DD. OBJECTIVE: The objective of this study is to investigate whether tDCS adjuvant with conventional numeracy training (CNT) would enhance the mathematical abilities of school-going children affected with DD. MATERIALS AND METHODS: Thirteen school-going children affected with DD received tDCS and CNT three sessions per week for up to 2 consecutive weeks. Left anodal and right cathodal stimulation at P3/P4 region with 2mA intensity combined with CNT for 30 minutes in a day was given. Learning disability diagnostic inventory (LDDI) was used as an outcome measure and collected at baseline and the end of the 2-week intervention. RESULTS: There was a significant improvement in the mathematical performance of school-going children. The results show statistically as well as a clinically significant improvement after the two weeks of intervention. CONCLUSIONS: tDCS combined with CNT effectively improves the mathematical abilities of school-going children affected with DD. The findings of this study provide a new perspective for the rehabilitation of school-going DD children.
Subject(s)
Humans , Male , Child , Adolescent , Dyscalculia/rehabilitation , Transcranial Direct Current Stimulation , Treatment OutcomeABSTRACT
Studies suggest that musical training enhances spatial-temporal reasoning and leads to greater learning of mathematical concepts. The aim of this prospective study was to verify the efficacy of a Non-Instrumental Musical Training (NIMT) on the Numerical Cognition systems in children with low achievement in math. For this purpose, we examined, with a cluster analysis, whether children with low scores on Numerical Cognition would be grouped in the same cluster at pre and post-NIMT. Participants were primary school children divided into two groups according to their scores on an Arithmetic test. Results with a specialized battery of Numerical Cognition revealed improvements for Cluster 2 (children with low achievement in math) especially for number production capacity compared to normative data. Besides, the number of children with low scores in Numerical Cognition decreased at post-NIMT. These findings suggest that NIMT enhances Numerical Cognition and seems to be a useful tool for rehabilitation of children with low achievement in math.