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According to reports on May 17th (Beijing time), organized by the American Physicist Organization Network and the “Nature†website, an international cooperation team consisting of institutions such as Brown University and German Air Navigation Center (DLR) recently passed a woman through the brain. Machine interface system, use your own ideas to control the robot arm, took a drink and drank a small mouth! The experiment is currently considered to be safe and feasible, and it also marks a major advancement in the recovery of brain-machine interface neural technology and assisted robotics. Related papers were published in the May 17 issue of Nature.
The device used in the study is called the "brain neural interface system" (referred to as the forehead system) and is a brain-computer interface (BCI). The goal is to allow the robot and its auxiliary equipment to receive control of the brain.
The volunteers who participated in the study were 58-year-old woman "Kathy" and 66-year-old man "Bob" who had been paralyzed due to brainstem stroke several years ago and could not control their limbs. The "forehead" system, originally developed by Brown University, is an aspirin tablet-sized chip that contains 96 microelectrode arrays that are implanted in the patient's motor cortex. The number of electrodes is basically enough for neurons to record neural activities related to the individual's intentional movement. An external computer converts the pulse pattern emitted by the nerve cell population into operating commands for the auxiliary device.
Auxiliary devices are two advanced robotic arms that serve as substitutes for the volunteers' arm: one is the DLR lightweight robot III (DLR LWR-III) with a DLR five-fingered hand, designed to help humans rebuild their arm behavior and achieve Communication; another is DEKA's arm system designed for amputees.
Kathy and Bob not only controlled the arm to reach and grab the target, Kathy also grabbed a bottle of coffee with the DLR's robot arm and placed it on the mouth, sending a pour command and drinking the coffee through the straw and then Put the bottle back on the table. During the entire mission process, the "brain gate" needs to direct the robot arm through the desktop, execute the "grab" command, and combine the "grab" and lift or tilt commands.
Bob used the eye-directed letters to describe how he felt when he controlled the arm: "I just imagined moving my own arm and the DEKA arm moved toward where I wanted to go."
“Our goal is to develop a technology that allows paralyzed or amputees to resume exercise, control, and independence. This requires further study.†said research leader author and clinical trial chairperson Li Horhberg, “in the current study People are encouraged not only to get in touch with the data, but also for the first time in 15 years that Cathy has used her ideas to drink coffee and smile.†(Reporter Chang Lijun)
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