Figure 2.

Combined cervical and lumbosacral transcutaneous spinal cord stimulation with intensive locomotor training. A: Intensive overground locomotion training with platform walker. B: Intensive treadmill training with bodyweight support and manual assistance of lower extremity swing at maximum walking speed. C: Electrode locations: 4 active electrodes were placed above and below the cervical spinal cord injury (C3-4, C6-7) and at the T11 and L1 vertebral levels (left). The common ground electrodes were placed at bilateral iliac crests (not shown). Participants wore a fanny pack to carry the stimulation device during locomotor training. Stimulation used biphasic, rectangular, 1-ms pulses at a frequency of 30 Hz filled with a carrier frequency of 10 kHz (right top).