tDCS and Upper Extremity Function in Stroke

The two key landmarks for EEG electrode placement are the nasion and the inion which are used to define the measurement. Measure the distance between the nasion and the inion along the midline of the head. Divide the nasion-inion distance by two to find the midpoint and mark this midpoint on the scalp along the midline. C3 (left hemisphere of the scalp) and C4 (right hemisphere of the scalp), which are placed 20% of the nasion-inion distance from the midline, and M1, which is placed 10% of this distance from the midline, can be determined using these calculations. From the midpoint marked on the scalp, measure to the left and right sides using the calculated 10% and 20% distances. Mark these points as M1 and its mirror position. Clean the scalp at the marked M1 and its mirror position locations to remove any oils or debris.

it can apply in sitting or supine lying position but it's important to ensure their comfort and safety while facilitating optimal electrode placement and contact with the scalp. Duration of 20 minutes, with Intensity of 0.5mA, and density of 0.02 mA/cm² for 8 weeks on alternative days