Effects of cSCS with different stimulus intensities on bilateral CBF and CVR. A: Typical recordings of bilateral CBF and arterial blood pressure in response to cSCS at different stimulus intensities. MT, motor threshold. B: Changes of bilateral cerebral blood flow (%ΔCBF, upper panel) and CVR (%ΔCVR, low panel) by cSCS at 30%, 60%, 90% of MT (n=9). * P <0.05 compared to response to cSCS at 30% of MT.