Laboratory of Brain-Computer Interfaces, Institute for Knowledge Discovery, Graz University of Technology, Krenngasse 37, 8010 Graz, Austria.
Comput Intell Neurosci. 2007;2007:79642. doi: 10.1155/2007/79642.
The aim of the present study was to demonstrate for the first time that brain waves can be used by a tetraplegic to control movements of his wheelchair in virtual reality (VR). In this case study, the spinal cord injured (SCI) subject was able to generate bursts of beta oscillations in the electroencephalogram (EEG) by imagination of movements of his paralyzed feet. These beta oscillations were used for a self-paced (asynchronous) brain-computer interface (BCI) control based on a single bipolar EEG recording. The subject was placed inside a virtual street populated with avatars. The task was to "go" from avatar to avatar towards the end of the street, but to stop at each avatar and talk to them. In average, the participant was able to successfully perform this asynchronous experiment with a performance of 90%, single runs up to 100%.
本研究旨在首次证明，脑电波可以被四肢瘫痪患者用于控制虚拟现实（VR）中的轮椅运动。在这个案例研究中，脊髓损伤（SCI）患者通过想象瘫痪的脚部运动，能够在脑电图（EEG）中产生β波爆发。这些β波被用于基于单个双极 EEG 记录的自定步速（异步）脑机接口（BCI）控制。受试者被置于一个虚拟街道中，里面有化身。任务是从一个化身走到街道尽头的另一个化身，但在每个化身前停下来与他们交谈。平均而言，参与者能够以 90%的成功率成功完成这个异步实验，单跑最高可达 100%。
