The University of Vermont Medical Center now has two robots that can help patients with neurological conditions learn to walk again. Those who have suffered strokes or brain injuries, have Parkinson's disease, or need mobility and balance training can benefit from the machines. Known as the Vector System, the robots are essentially high-tech human trolleys: Patients are strapped into harnesses suspended from a ceiling-mounted track, and the dynamic system adapts to changes in body weight, allowing them to perform tasks without fear of falling. The robots give patients the confidence to push themselves harder during rehab sessions, which research shows is the best way to regain vital motor functions, said Lisa Goodwin, supervisor of the hospital's inpatient rehab therapy. She likened it to learning how to hit a baseball: "Somebody might coach you in the beginning — 'Do this, do that' — but then your brain is just figuring out that error and how to correct it." The system also relieves health care workers, who previously risked injuring themselves when physically supporting patients. The hospital purchased the robots and renovated its mobility gym at the Fanny Allen rehab center using a donation from Tony Cairns. He stewards a philanthropic endowment established to benefit Fanny Allen, where his father received lifesaving care. Last year, the hospital approached Cairns with a $500,000 request, which he approved in full. "The robot is pretty ingenious, and there is certainly a need for the services," Cairns said in a press release. One morning last week, a patient with limited use of his right leg strapped in and began navigating a short obstacle course. He stepped over padded mats and sturdy platforms, and when he listed too far to the right, the harness caught him. He laughed as his physical therapist pushed a button to raise the harness high enough for him to get back on his feet — then off he went again. The original print version of this article was headlined "Steps at a Time" …