Fig. 3

The effect of dual-tDCS on TMS measures over time. a Transcranial magnetic stimulation (TMS) metrics recorded from extensor carpi radialis (ECR) at 0, 15 and 30 min after real (solid line) and sham (dotted line) dual-transcranial direct current stimulation (tDCS) for healthy controls (n = 14) and (b) stroke survivors (n = 18). ΔMEP denotes normalised motor evoked potential (MEP), i.e. MEP post tDCS / MEP before tDCS. The same applies for ipsilateral silent period (iSP) and short-interval intracortical inhibition (SICI). Mean and standard error across individuals is shown. DH = dominant hemisphere; NH = non-dominant hemisphere; IH = ipsilesional hemisphere; CH = contralesional hemisphere. *p < 0.05, **p < 0.01, ***p < 0.001