Researchers have developed a brain-machine interface (BMI) that allows monkeys to move two virtual arms just by thinking. A separate team of scientists has designed a device that mimics bladder function in paralyzed rats. Both technologies are wedded to the nervous system in a way that could potentially produce more natural, personalized control of sensory and motor function in paralyzed patients. The studies, which appear in the 6 November issue of the journal Science Translational Medicine, highlight the future of neuroprosthetic and robotic technologies in human health. The idea behind BMIs is to link the brain activity from imagined movements to a computerized device that enables actual movement. A person with a spinal cord injury can still think about moving his or her limbs, but because the spinal cord is disconnected from the brain, these actions cannot be carried out. BMIs aim to bypass the spinal cord to regain control of limb movement.
AAAS: Technologies Seek to Bypass Nerve Damage in Paralyzed Patients
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