Cervical spinal map by epidurally evoked motor pools and cathode electrodes of transcutaneous electrical spinal stimulation
(A) Distribution of motor pools projecting to upper-limb muscles based on the segmental charts provided by (McIntyre et al., 2002). BIC: biceps brachii, TRI: triceps brachii, FCR: flexor carpi radialis, ECR: extensor carpi radialis, APB: abductor pollicis brevis, ADM: abductor digiti minimi.
(B) Electrode array with sixteen stimulation sites.