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Schematic of the intervention showing electrical cervical spinal stimulation applied to the surface of the skin via electrodes placed midline at C3–4 and C6–7 bony landmarks. (Inset) Biphasic, rectangular, 1 ms pulses are delivered at a frequency of 30 Hz. Each pulse is filled with a carrier frequency of 10 kHz to permit stimulation intensities of 80–120mA to pass through the skin and reach the spinal cord without discomfort.
