Department of Biomedical Engineering, University of California, Davis, CA 95616, USA.
IEEE Trans Neural Syst Rehabil Eng. 2010 Apr;18(2):203-9. doi: 10.1109/TNSRE.2009.2039394. Epub 2010 Jan 12.
In this study, human subjects achieve two-dimensional cursor-to-target control using the surface electromyogram (sEMG) from a single muscle site. The X-coordinate and the Y-coordinate of the computer cursor were simultaneously controlled by the active manipulation of power within two frequency bands of the sEMG power-spectrum. Success of the method depends on the sEMG frequency bandwidths and their midpoints. We acquired the sEMG signals at a single facial muscle site of four able-bodied subjects and trained them, by visual feedback, to control the position of the cursor. After training, all four subjects were able to simultaneously control the X and Y positions of the cursor to accurately and consistently hit three widely-separated targets on a computer screen. This technology has potential application in a wide variety of human-machine interfaces to assistive technologies.
在这项研究中，人类受试者通过单个肌肉部位的表面肌电图 (sEMG) 实现二维光标到目标的控制。通过主动操纵 sEMG 功率谱的两个频带内的功率，同时控制计算机光标的 X 坐标和 Y 坐标。该方法的成功取决于 sEMG 的频带宽度及其中点。我们从四名健康受试者的单个面部肌肉部位获取 sEMG 信号，并通过视觉反馈训练他们控制光标的位置。经过训练，所有四名受试者都能够同时控制光标的 X 和 Y 位置，准确且一致地击中计算机屏幕上三个相距很远的目标。这项技术在各种人机界面辅助技术中有潜在的应用。
