Transcranial direct current stimulation of the primary motor cortex affects cortical drive to human musculature as assessed by intermuscular coherence

摘要: Intermuscular coherence analysis can be used to assess the common drive muscles. Coherence in β-frequency band (15–35 Hz) is thought arise from cortical sources. a potentially attractive tool for investigation of motor excitability changes because it non-invasive and done relatively quickly. We carried out this study test hypothesis that intermuscular was able detect healthy subjects following transcranial direct current stimulation (tDCS). tDCS has been shown increase (anodal stimulation) or decrease (cathodal size muscle potential evoked by TMS. found anodal caused an (MEP) paralleled β-band coherence. Similarly, reduction MEP produced cathodal coherence, while sham did not result any change either amplitude The similar pattern observed may indicate mechanisms action, although cannot assumed without further investigation. These do suggest at least some action on networks, combined useful diagnosis pathologies affecting excitability.