The effectiveness of Transcranial direct current stimulation (tDCS) on attention and working memory in students with dyslexia

The aim of the present study was to determine the effectiveness of Transcranial direct current stimulation on attention and working memory of students with dyslexia. The method of this research was a semi-experimental type of pre-test, post-test and control group. The statistical population of the present study consisted of all dyslexic children who referred to the learning disorders center in Ardabil city in 2022. The sample of the present study was 20 people from the above statistical population who were selected by available sampling method and randomly assigned to two experimental (20: n) and control (20: n) groups. In order to collect data in the pre-test and post-test stages, the scale of the second version of continuous performance test and N-back working memory test was used. The experimental group received the tDCS protocol for 10 weeks every week, 2 sessions of 20 minutes each session, and the control group did not receive any intervention. Multivariate analysis of covariance (MANCOVA) was used to analyze the data. The results of covariance analysis showed that there is a significant difference in attention and working memory between dyslexic and normal children (P<0.05). Considering the effectiveness of transcranial direct current stimulation, this technique may actually be a neurobiologically based, low-cost and easy treatment option with long-term effects for children and adolescents with dyslexia.