Emulation of computer mouse control with a noninvasive brain-computer interface
Emulation of computer mouse control with a noninvasive brain-computer interface
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DOI：
10.1088/1741-2560/5/2/001
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发表时间：
2008-06-01
影响因子：
4
通讯作者：
Wolpaw, Jonathan R.
中科院分区：
文献类型：
--
作者：
McFarland, Dennis J.;Krusienski, Dean J.;Wolpaw, Jonathan R.
脑机接口(BCI)技术可以为严重瘫痪的人提供非肌肉交流和控制。BCI可以使用非侵入性或侵入性技术来记录传达用户命令的大脑信号。尽管非侵入性BCI用于简单的应用，但人们经常认为，只有使用植入大脑的电极的侵入性BCI才能提供对机械臂或神经假体的多维顺序控制。本研究表明，使用头皮记录的脑电(EEG)活动和自适应算法的非侵入性BCI可以为包括脊髓损伤患者在内的人提供二维光标移动和目标选择。多个目标被呈现在计算机屏幕的周围，其中一个被指定为正确的目标。用户的任务是使用EEG将光标从屏幕中心移动到正确的目标，然后使用额外的EEG功能选择目标。如果光标到达了错误的目标，则会指示用户不要选择它。因此，本任务模拟了鼠标操作的关键功能。结果表明，严重运动障碍的人可以使用大脑信号进行顺序的多维运动和选择。
Brain-computer interface (BCI) technology can provide nonmuscular communication and control to people who are severely paralyzed. BCIs can use noninvasive or invasive techniques for recording the brain signals that convey the user's commands. Although noninvasive BCIs are used for simple applications, it has frequently been assumed that only invasive BCIs, which use electrodes implanted in the brain, will be able to provide multidimensional sequential control of a robotic arm or a neuroprosthesis. The present study shows that a noninvasive BCI using scalp-recorded electroencephalographic (EEG) activity and an adaptive algorithm can provide people, including people with spinal cord injuries, with two-dimensional cursor movement and target selection. Multiple targets were presented around the periphery of a computer screen, with one designated as the correct target. The user's task was to use EEG to move a cursor from the center of the screen to the correct target and then to use an additional EEG feature to select the target. If the cursor reached an incorrect target, the user was instructed not to select it. Thus, this task emulated the key features of mouse operation. The results indicate that people with severe motor disabilities could use brain signals for sequential multidimensional movement and selection.