Non-invasive Brain Stimulation for the Treatment of Mild Cognitive Impairment in Parkinson's Disease

High-frequency (10 Hz) rTMS targeting the left DLPFC, based on fMRI-peak activation during performance of the Tower of London task, at 110% resting motor threshold intensity, corrected for scalp-cortex distance at the target location, for a total of 3000 pulses per session, using 30 trains of 10 seconds with 30-second inter-train intervals (total duration: 20 minutes), using neuronavigation to record the pulse location.

Anodal high-definition tDCS. The anode will be placed at the F3 EEG location, coordinates registered using neuronavigation on the first intervention session on-site, and cathodes at Fp1, Fz, C3 and F7, in a ring surrounding the anode, using π cm2 circular stimulation electrodes, stimulating the left DLPFC at 2 mA intensity for a duration of 20 minutes, 15 s ramp up and 15 s ramp down. After an initial on-site instructional tDCS session, the tDCS intervention will be delivered at home, in part remotely-supervised via MS Teams.