Elon Musk’s Neuralink company is beginning tests on a human brain implant designed to assist people with paralysis and other neurological disorders. Past testing of such technology has experienced failures that raise concern about the risks of human trials for Neuralink’s device. Some medical researchers caution that using brain-computer interface devices could cause severe health problems if not performed correctly. Bradley Greger, an associate professor in the School of Biological and Health Systems Engineering, part of the Fulton Schools, sees potential for new treatments for neurological disorders, including for spinal cord injuries, paralysis and nervous system disorders. But he also stresses the need for especially careful testing, analysis and clinical trials.