Paralysed woman uses the mind to move the robot arm
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paralyzed womanrobot moves with your mind
Nature .
A quadriplegic woman has used his mind to control a robotic arm, took a sip from a bottle, without support for the first time since 15 years. The 58-year-old American was one of two people from the neck down by a stroke, their brains were using a small electronic device that nerve impulses are translated into commands that are implanted in a robot work-paralyzed body. The other patient, a 66-year-old man, he directed the robotic arm to touch a ball of foam.Advertisement: Story continues below
Photo: AP
“I just thought moving the arm and his [robotic] arms move where I wanted to go,” he said.
The events mark an important step towards the restoration of paralyzed mobility and independence for people with a neurological disease or injury. As part of its research scientists have a surgically implanted electronic device, called Brain Gate, in the region of the brain that controls voluntary movement, the motor cortex of the patient. The pioneer of the unit and co-author of the study, John Donoghue, said that the device 96 thin electrodes detects the electrical impulses from neighboring neurons. Each signal is then connected by a series of thin wires with a computer algorithm in the electrical patterns into instructions that control the robot traveled deciphered, said Professor Donoghue, a neuroscientist at Brown University in the United States. For program algorithms to decode neural signals, scientists have had both patient and obse rve the motion of the robot arm and imagine moving their own limbs. intention to move the patient, as represented in the brain signals were then translated into commands that can control the robot arm. Professor Donoghue said the team was surprised to discover that the information is also detailed models of the brain of the patient, such as where they wanted to decipher his hand placed in the room, the speed of their movements, and if they could open and close the hand. “This decoding algorithms are the product of many years of basic neuroscience research on how the neural signals that are intended to be,” said Professor Donoghue, whose results in the journal Nature published . The experiments took place in April last year showed a person to operate motor cortex years after injury, he said. Since each a different type of patient-controlled robotic arm that is designed to be strong and stiff, and precise and agile, both could rea ch out and grasp an object. While the study was an important step forward, more research for the group needed to achieve their goal – to connect to the brain to the limbs of a person’s own or connect the brain with a leg amputee prosthesis, said Professor Donoghue The team had previously shown that patients with spinal cord injuries could use reason to control a cursor on a computer screen.
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