Release date: 2014-08-27
Recently, China used the patient's intracranial implanted electrode idea to control the manipulator for the first time, and successfully completed the difficult limb movement - "stone, scissors, cloth" this guessing action.
Two years ago, Zhejiang University successfully extracted and deciphered the neural signals of the monkey brain about grasping, hooking, gripping, and pinching the four gestures, making a monkey named Jianhui the same as the steel warrior in Avatar. "Ideas" controls a robot to perform different actions. Two years later, on the basis of the success of this research, China first used the patient's intracranial implanted electrode idea to control the manipulator, and successfully completed the difficult limb movement - "stone, scissors, cloth" this guessing action. This research has made the clinical application of brain-computer interface technology a big step forward and has reached the highest level in the world.
On the 25th, in the Second Affiliated Hospital of Zhejiang University School of Medicine in Hangzhou, Zhejiang Province, Zheng Yuxiang, a professor at the Institute of Advanced Studies of Zhejiang University, reported the latest achievements in this field in China. She introduced that the purpose of researching the brain-computer interface is to realize the effective control of the human brain to the external machinery through the new technology of brain-computer interface, to some extent to solve the clinical problems due to stroke, gradual freezing, post-stroke limb paralysis and the like. Patients with limb motor dysfunction.
Stroke is currently the second most deadly disease in the world, with 6.2 million deaths per year. About 1.7 million of these patients have serious stroke-related complications, leading to disability, and limb paralysis is the main disability. Through this research, motor function reconstruction can be implemented to improve the quality of life of patients.
Zhang Jianmin, director of the Department of Neurosurgery at the Second Hospital of Zhejiang Province, said that Xiao Liu, who participated in the clinical trial, had complicated refractory epilepsy and needed intracranial buried electrodes to further analyze cortical EEG. Through the craniotomy of the cranial electrode, the motorized area of ​​the surface of Xiao Liu's brain was implanted with an electrode 4 cm long and 8 cm wide.
The electrodes can continuously monitor their EEG activity. Through Xiao Liu’s actions of “stone, scissors and clothâ€, the scientific research personnel established relevant models, and “deciphered†the EEG signals and then “directed†the manipulators to control their finger activities. The accuracy of the current match reached 80%. In addition, by judging the brainwaves of Xiao Liu, the robot can play the game of "stone, scissors, cloth" with it.
The reporter learned that since the mid-1990s, the brain-computer interface for sports has experienced rapid development. Since the 21st century, the world's top laboratories have successively realized the rat's mind pressure bar, the monkey's mindful feeding and the human brain electronic control robot to grab chocolate. Developed countries have invested heavily in launching brain research, in which brain-computer interface technology is one of the important ones.
On a global scale, the application of brain-computer interface technology in the human brain has been able to successfully achieve the successful grasp of a specific object (such as paper cups and balls) under the control of mind, that is, the control is accurate to the fingers. The level of action.
"At present, there is still a long way to go to control external devices through "ideas" in the world, but the development prospect of this technology is desirable. Once the relevant technology matures, research in this field will expand in the foreseeable future. To all aspects of daily life, you can even enhance and expand the physiological functions of normal people." Zheng Yuxiang said.
Source: China News Network
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