Cerebellar Transcranial Direct Current Stimulation in Spinocerebellar Ataxia 38

Anodal stimulation was delivered by a battery-driven stimulator (Neuroelectrics, Barcellona, Spain) through a pair of saline-soaked surface sponge electrodes (7 x 5 cm2) producing a constant current of 2 mA for 20 min. The anode was placed 2 cm under the inion and the cathode was placed over the right deltoid muscle (CD-tDCS) or the spinal lumbar enlargement (2 cm under T11) as described by Benussi et al. (CS-tDCS). An electroconductive gel was applied to the electrodes to reduce contact impedance and the electrodes were held in place using elastic gauzes.