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大脑可塑性的计算机接口

Plasticity at the Brain-Computer Interface
课程网址: http://videolectures.net/bbci09_jackson_patb/  
主讲教师: Andrew Jackson
开课单位: 纽卡斯尔大学
开课时间: 2009-08-10
课程语种: 英语
中文简介:
下一代反复出现的脑-机接口不仅可以从皮质活动中提取信号,还可以通过电刺激向神经系统提供反馈。例如,刺激颈椎节段可以产生功能性的手臂和手运动,如伸展和抓握。我们正在开发包括慢性电极和植入式电子线路在内的新技术,以控制来自皮质记录的刺激,构成一个人工皮质脊髓连接,可以取代受伤的运动路径。我将提供证据证明,运动系统可以很容易地获得新的神经运动转换,需要将这些连接纳入运动系统功能。在单独的实验中,我们已经证明,人工连接的操作可以通过活性依赖的塑性机制增强新的运动路径。综上所述,这些结果表明,复发性脑梗塞不仅作为替代功能的假体,而且作为操纵塑性重组以恢复损伤后神经系统功能的工具。
课程简介: Next generation recurrent Brain-Computer Interfaces will not only extract signals from cortical activity but also deliver feedback to the nervous system via electrical stimulation. For example, stimulation of cervical spinal segments can produce functional arm and hand movements such as reaching and grasping. We are developing new technologies including chronic electrodes and implantable electronic circuitry to control stimulation from cortical recordings, constituting an artificial corticospinal connection which could replace injured motor pathways. I will present evidence that the motor system can readily acquire the novel neuromotor transformations required to incorporate these connections into motor system function. In separate experiments we have shown that operation of artificial connections can potentiate new motor pathways via activity-dependent plasticity mechanisms. Together, these results suggest that recurrent BCIs have application not only as prostheses to replace function, but also as tools for manipulating plastic reorganisation to restore nervous system function following injury.
关 键 词: 脑机接口; 可塑性机制; 神经系统; 电机系统
课程来源: 视频讲座网
最后编审: 2020-09-28:heyf
阅读次数: 23