A Pilot Study of Brain-Triggered Electrical Stimulation with Visual Feedback in Patients with Incomplete Spinal Cord Injury - Trincado-Alonso, F.; López-Larraz, E.; Resquín, F.; Ardanza, A.; Pérez-Nombela, S.; Pons, J.L.; Montesano, L.; Gil-Agudo, Á. (Journal of Medical and Biological Engineering, 2018)