February 19, 2004
Mind Control
This is a very neat story. Researchers at Duke University have a robotic arm that is controlled not by software, but rather by directly decoding the brain signals from a monkey. This has implications for the paralyzed, as well as telepresence research.
Posted by elkaim at February 19, 2004 11:52 AMFor decades scientists have pondered, speculated on, and pooh-poohed the possibility of a direct interface between a brain and a machine -- only in the late 1990s did scientists start learning enough about the brain and signal-processing to offer glimmers of hope that this science-fiction vision could become reality. Since then, insights into the workings of the brain -- how it encodes commands for the body, and how it learns to improve those commands over time -- have piled up at an astonishing pace, and the researchers at Duke studying the macaque and the robotic arm are at the leading edge of the technology. "This goes way beyond what's been done before," says neuroscientist Miguel Nicolelis, co-director of the Center for Neuroengineering. Indeed, the performance of the center's monkeys suggests that a mind-machine merger could become a reality in humans very soon.
Nicolelis and his team are confident that in five years they will be able to build a robot arm that can be controlled by a person with electrodes implanted in his or her brain. Their chief focus is medical -- they aim to give people with paralyzed limbs a new tool to make everyday life easier. But the success they and other groups of scientists are achieving has triggered broader excitement in both the public and private sectors.
[...]
The notion of decoding the brain's commands can seem, on the face of it, to be pure hubris. How could any computer eavesdrop on all the goings-on that take place in there every moment of ordinary life? Yet after a century of neurological breakthroughs, scientists aren't so intimidated by the brain; they treat it as just another information processor, albeit the most complex one in the world. "We don't see the brain as being a mysterious organ," says Craig Henriquez, Nicolelis's fellow co-director of the Center for Neuroengineering. "We see 1s and 0s popping out of the brain, and we're decoding it."