EMG and ground reaction forces recorded during standing with different electrode configurations.

<p>EMG and ground reaction force were recorded from all participants during standing. Stimulation amplitude and frequency (3.0 V and 25 Hz, respectively) were delivered with a wide-field electrode configuration. Cathodes were placed either in the caudal (Panel A) or rostral (Panel B) portion of the array; anodes were placed specular to cathodes, as shown in the bottom left of the figure.Panel C: Average (N = 100) peak to peak spinal cord evoked potentials amplitude recorded from the four participants during standing with cathodes placed caudally (black bars, Configuration A) or rostrally (white bars, Configuration B). As for participant B13, spinal cord evoked potentials were taken from the windows entered in A and B. TA: tibialis anterior; MG: medial gastrocnemius; SOL: soleus.