RESUMEN
Many key problems in autistic children are related to executive dysfunction. This dysfunction is usually occurred due to structural and functional dissociation between brain regions. So neurofeedback can be used as a new treatment procedure in improving children's executive function through modifying brain waves but behavioral changes are usually reflection of long-term changes in the brain level. Therefore the purpose of this study is to investigate the overall effect of neurofeedback training and behavioral effects caused by adding occupational therapy based on cognitive rehabilitation. Single system [A-B-A-B+C-A] design was used in this study. Participants were 2 children with autism spectrum disorder who completed 41 sessions during the study. They received neurofeedback intervention alone [B] during 20 sessions and in the following 12 sessions neurofeedback with occupational therapy [B+C]. In this study, Wisconsin card sorting and tower of london tests were used for collecting information on children,s executive functions. According to the obtained results, the effect size of neurofeedback training on executive function was high for both participants. The rate of shifting attention was improved as one of the executive function items after adding occupational therapy and also the increasing effect of neurofeedback in planning was maintained. The results of this study showed that neurofeedback can improve executive function in autistic children and the effect of neurofeedback can be more obvious if occupational therapy will be added. But gaining more significant behavioral changes after receiving occupational therapy needs more sessions