Brain-Computer Interface Controlled Cyborg: Establishing a Functional Information Transfer Pathway from Human Brain to Cockroach Brain.
Brain-Computer Interface Controlled Cyborg: Establishing a Functional Information Transfer Pathway from Human Brain to Cockroach Brain.
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脑机接口控制的机器人：建立从人脑到蟑螂脑的功能信息传输通路
DOI：
10.1371/journal.pone.0150667
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Zhang D
中科院分区：
文献类型：
--
作者：
Li G;Zhang D
本研究开发了一种全链式无线脑-脑系统（BTBS），该系统能够通过人脑对电子蟑螂进行运动控制。该系统采用基于稳态视觉诱发电位（SSVEP）的脑机接口（BCI）进行人体运动意图识别，并提出了一种优化算法以提高BCI的在线性能。这种半机械蟑螂是通过外科手术整合一个便携式微刺激器开发出来的，该微刺激器可以产生侵入性的神经电刺激。通过蓝牙通信，特定的电脉冲序列可以由BCI命令从微刺激器触发，并通过天线神经发送到刺激蟑螂的大脑。设计并进行了系列实验，以测试BTBS的整体性能与六个人类受试者和三只蟑螂。实验结果表明，优化算法使三模式脑机接口的在线分类准确率从72.86%提高到78.56%，提高了5.70%，机器人的平均响应准确率达到89.5%。此外，实验结果还表明，人脑可以引导机器人完成沿着S形轨迹的行走，成功率约为20%，表明提出的BTBS建立了一条可行的人脑到蟑螂脑的功能信息传递路径。
An all-chain-wireless brain-to-brain system (BTBS), which enabled motion control of a cyborg cockroach via human brain, was developed in this work. Steady-state visual evoked potential (SSVEP) based brain-computer interface (BCI) was used in this system for recognizing human motion intention and an optimization algorithm was proposed in SSVEP to improve online performance of the BCI. The cyborg cockroach was developed by surgically integrating a portable microstimulator that could generate invasive electrical nerve stimulation. Through Bluetooth communication, specific electrical pulse trains could be triggered from the microstimulator by BCI commands and were sent through the antenna nerve to stimulate the brain of cockroach. Serial experiments were designed and conducted to test overall performance of the BTBS with six human subjects and three cockroaches. The experimental results showed that the online classification accuracy of three-mode BCI increased from 72.86% to 78.56% by 5.70% using the optimization algorithm and the mean response accuracy of the cyborgs using this system reached 89.5%. Moreover, the results also showed that the cyborg could be navigated by the human brain to complete walking along an S-shape track with the success rate of about 20%, suggesting the proposed BTBS established a feasible functional information transfer pathway from the human brain to the cockroach brain.