稳态运动视觉诱发电位的诱发及在脑机接口中的应用进展

Induction of steady-state motion visual evoked potential and its application in brain-computer interface

基于稳态运动视觉诱发电位(SSMVEP)的脑机接口(BCI)能够减少使用者的视觉疲劳,但其信号强度和系统性能仍不能代替基于稳态视觉诱发电位(SSVEP)的BCI。本文对提高SSMVEP信噪比的两种思路以及SSMVEP在BCI中的应用进行了综述。首先归纳和总结了影响SSMVEP诱导和性能的3个主要因素,即运动视觉刺激方式、运动视觉刺激参数和SSMVEP的信号处理方法;然后介绍了SSMVEP在医疗、娱乐等领域的应用;最后提出了目前使用SSMVEPBCI的限制以及未来发展方向。

Brain-computer interface(BCI) based on steady-state motion visual evoked potential(SSMVEP) can reduce user’s visual fatigue, but the signal intensity and system performance still cannot replace BCI based on steady-state visual evoked potential(SSVEP). Two directions about how to achieve a high signal-to-noise ratio of SSMVEP and the application of SSMVEP in BCI were reviewed. Firstly, three main factors affecting the induction and performance of SSMVEP were summarized, that was, motor visual stimulation mode, motor visual stimulation parameters and signal processing methods of SSMVEP. Then the application of SSMVEP in medical and other fields was introduced. Lastly, the present limitations of SSMVEP-BCI and the future development direction were proposed.