UH Moment: "Robot Legs"
by: Marisa Ramirez, June 13, 2012 9:06:00 pm
It looks and sounds like something from the movie The Transformers—bulky, robot legs are strapped onto a participant. They buzz and hum as he adjusts to the machine and does something he hasn't done in two-and-a-half years: walk.
"We are attacking the problem of brain injury by providing new solutions to problems related to the brain, like disability," said Jose Luis Contreras-Vidal, director of the Laboratory for Noninvasive Brain-Machine Interface Systems at the University of Houston. His research is in collaboration with The Methodist Hospital.
The idea of capturing the brain's intention to move isn't completely new, but research to this point has relied on invasive technologies, such as electrodes implanted in the brain. Contreras-Vidal's research uses the noninvasive scalp electroencephalogram to record brainwave activity.
"The electrode cap is like a swimming cap with 32 sensors, which acquire and measure brain activity thatescapes the scalp," he said. "The signals are recorded, teaching the computer what the different brain signals mean, ultimately used to control the machine."
Until the computer "learns" what the brain waves mean, Holbert uses a joystick to maneuver himself in the robot legs as he walks across the room.
"Just to stand up feels great," he said. "It's a good start. I definitely have hope."
Jose Luis Contreras Vidal is part of what's happening at the University of Houston.