Effect of various intensities of tDCS on dual-task cognitive functions in normal subjects

Published: 24 April 2023| Version 1 | DOI: 10.17632/t36ymgsjkt.1
Elina Kenni,


Transcranial Direct Current Stimulation (tDCS) is a neuromodulation technique that delivers a weak direct current to cortical areas with the intention of changing the brain's basic metabolic processes. Degradation of executive performance may not necessarily arise from cathodal stimulation, and vice versa for anodal stimulation. TDCS has been used to treat a variety of mental problems, including depression, chronic pain, improved cognition, and neurological therapy. The aim of the study is to evaluate the effectiveness of transcranial direct current stimulation in enhancing cognitive performance for dual-tasking. The target region at F3 and F4 received tDCS treatment on 20 individuals. Utilising the 10-20 EEG method, electrodes were inserted over the prefrontal cortex with the current electrode over the F3 region and the standard electrode over the F4 region. For 20 minutes over three days per week for up to three weeks, current strengths of 0.5mA for group A, 1.0mA for group B, 1.5mA for group C, and 2.0mA for group D were administered. when engaging in multiple tasking cognitive processes. The statistical analysis was carried out using SPSS, version 26.0. The results were considered significant at a 0.05 p-value. Samples were gathered following the procedure. Each group increased significantly, according to statistical analysis, but group D—which got 2mA intensity—exhibited the most improvement. According to the results of the study, group D's cognitive functioning and sleep quality both statistically and clinically improved after the therapy, that continued for three weeks. Cognitive capacities can be improved with dual-tasking and left anodal right cathodal tDCS. The tDCS method can thus be used with other therapies to improve cognitive function.



Maharishi Markandeshwar Institute of Physiotherapy and Rehabilitation


Cognitive Assessment