Wednesday, September 5, 2012

Man Walks With Aid of Brain-Controlled Robotic Legs

Man Walks With Aid of Brain-Controlled Robotic Legs: The new device... is controlled by electroencephalogram...
The test subject in the study wore such a cap while standing on a treadmill inside leg braces known as a “robotic gait orthosis.” The subject would imagine walking or standing, and the device was taught to associate each brain activity pattern with the appropriate action. Then, whenever those patterns were encountered, the braces would start or stop walking accordingly.
The researchers also measured leg muscle activity by electromyogram, or EMG, for three conditions: active walking (with the robotic braces powered off), cooperative walking (aided by the braces), and passive walking (with the leg braces making all the movements).

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