THE EFFECT OF POSTERIOR CEREBRAL PULMONARY DIRECT ELECTRICAL STIMULATION (TDCS) ON IMPROVING SPATIAL, VISUAL, AND VERBAL PERCEPTUAL ABILITIES

Background & Aims: Direct electrical stimulation of the brain is a therapeutic technique that can be effective in improving visual, verbal, and spatial perception. The present study investigated the effect of direct electrical stimulation (tDCS) of the posterior parietal cortex on improving spatial, visual, and verbal perceptual abilities. Materials & Methods: In this quasi-experimental study, the statistical population of the study consisted of all students of Shahid Beheshti University who were studying in the academic year 2017-18. Among them, 30 subjects were selected by purposive non-random sampling and received direct intervention of posterior parietal cortex. Mental rotation test and Parsi abstract reasoning test were used to measure spatial-visual perception and verbal perception. Data were analyzed using descriptive and inferential statistical methods including one-factor analysis of variance with emphasis on study within the subjects. Results: The results showed that tDCS of the posterior parietal cortex improves spatial, visual (P <0.01) (F = 19.61) and verbal (P <0.01) (F = 73.91) perceptual abilities. Conclusion: It is suggested that the results of this study be used in effectiveness and educational programs.