Fig. 4From: Ultrasound-driven piezoelectric current activates spinal cord neurocircuits and restores locomotion in rats with spinal cord injuryNormalized area-under-the-curve (AUC) and peak-to-peak voltage (Vpp) were measured to enable a clear comparison between ES and pES MEPs. Week 1 and week 3 AUC and Vpp show similar recruitment curves of both ES and pES, while week 2 spinal cord seems to be more sensitive to the pES. C equals to 0.1 V for ES or 0.003 mW/cm2 for pESBack to article page