Propriospinal cutaneous-induced EMG suppression is unaltered by anodal tDCS of healthy motor cortex

Transcranial direct current stimulation (tDCS) is a non-invasive neuromodulation technique with potential application as an adjuvant to neuro-rehabilitation of the upper limb. Anodal tDCS (a-tDCS) is expected to increase corticomotor excitability and cathodal tDCS (c-tDCS) decrease corticomotor excitability (Nitsche et al., 2000; Nitsche et al., 2008; Stagg et al., 2011). The exact mechanisms of tDCS are yet to be elucidated, however corticomotor excitability may be modulated via acute subthreshold shifts in the membrane potential that mediates polarity-specific changes in synaptic plasticity (Stagg et al., 2011).

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