Muscle contraction during dipolar cortico-muscular stimulation (dCMS) in animals with SCI. A: representative initial and final muscle twitches demonstrated greater twitch peak force at the end (final) than the beginning (initial) of dCMS on the contralateral muscle to stimulated M1. B: Bars show averages (n = 9) of initial and final twitch peak force of the contralateral muscle, which was significantly larger at the end of dCMS. C: representative initial and final muscle twitches of the ipsilateral muscle (to stimulated M1) during dCMS demonstrated an increase in twitch force in response to dCMS. D: bars show averages (n = 9) of initial and final twitch peak force of the ipsilateral muscle. *p < 0.05. Data show means ± SD.