In Memoriam: Professor Reggie Edgerton

We were recently saddened to hear the news of Professor Reggie Edgerton’s passing. In his career of over 60 years, his research helped establish the scientific basis for modern neuromodulation and rehabilitation methods. He will be dearly missed, and our thoughts are with those closest to him.

James Guest, Chair of Spinal Research Strategic Advisory Committee and Professor of Neurological Surgery at The Miami Project to Cure Paralysis, has written a touching tribute to Professor Edgerton below.

Professor Reggie Edgerton, who passed away recently, was a towering figure in spinal cord research. A highly skilled physiologist and a true scholar of the spinal cord. Over nearly six decades, starting with his first publication in 1969 on muscle histology, he authored nearly 550 scientific papers that profoundly shaped our understanding of neuromuscular and spinal cord physiology.

Professor Edgerton’s work was groundbreaking in defining the principles of locomotor networks within the spinal cord, clarifying the capacity for spinal cord plasticity, and advancing the idea of spinal cord learning.

 His research helped establish that the spinal cord is not just a passive conduit but an adaptable and responsive system capable of interpreting sensory input and reorganizing function after injury.

A hallmark of his career was his commitment to mentorship. He trained numerous students and postdoctoral fellows who have gone on to distinguished careers, extending his scientific legacy across generations.

His scientific vision also emphasized the importance of activity and exercise in recovery. He played a key role in promoting the idea that locomotor training could activate innate spinal mechanisms, enabling the nervous system to “remember” and improve learned motor patterns even after severe injuries. This inspired rehabilitation efforts that clarified principles of locomotor recovery widely used today, including epidural and transcutaneous spinal cord stimulation to enhance function after spinal cord injury.

I first began corresponding with Reggie in 2005 about large-animal models of spinal cord injury, starting a dialogue that has lasted over twenty years. In October 2011, I visited the University of Louisville during the earliest human trials with epidural stimulation, work deeply rooted in the foundational knowledge generated by Reggie and his colleagues. These pioneering studies were made possible by his insights into how the spinal cord responds to training and sensory input, and how these responses can help restore function after paralysis. A later visit to his lab in 2015, with one of my postdoctoral fellows, showed a lively and collaborative scientific environment. It was a place driven by discovery, mentorship, and good humor.

Professor Edgerton’s legacy lies not only in the knowledge he generated but also in the paradigm shift he helped create, moving from viewing paralysis as permanent to recognizing it as a condition with latent potential for recovery. His work helped establish the scientific basis for modern neuromodulation and rehabilitation methods that continue to transform lives. He will be remembered as an innovator, mentor, and scientist whose curiosity and rigor reshaped the field. His influence remains evident in the work of his trainees and collaborators, as well as in the renewed hope his discoveries have inspired for individuals living with spinal cord injury.