Burst and Tonic Spinal Cord Stimulation Differentially Activate GABAergic Mechanisms to Attenuate Pain in a Rat Model of Cervical Radiculopathy. - Nathan D. Crosby; Christine L. Weisshaar; Jenell R. Smith; Martha E. Zeeman; Melanie D. Goodman-Keiser; Beth A. Winkelstein (IEEE Trans. Biomed. Eng., 2015)