Fig. 3

NIBS effects on motor performances during dual tasks. NIBS = non-invasive brain stimulation; tDCS = transcranial direct current stimulation; rTMS = repetitive transcranial magnetic stimulation; DLPFC = dorsolateral prefrontal cortex; M1 = primary motor cortex; SMA = supplementary motor area; L = left; R = right; DTC = dual-task cost; FOG = freezing of gait; TUG = timed up and go