Guo Meng'ao, Yang Banghua, Geng Yiting, Jie Rongxin, Zhang Yonghuai, Zheng Yanyan
School of Mechanical and Electrical Engineering and Automation, Shanghai University, Shanghai 200444, P. R. China.
Shanghai Sensing Technology Company, Shanghai 201900, P. R. China.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2024 Aug 25;41(4):684-691. doi: 10.7507/1001-5515.202403041.
This study investigates a brain-computer interface (BCI) system based on an augmented reality (AR) environment and steady-state visual evoked potentials (SSVEP). The system is designed to facilitate the selection of real-world objects through visual gaze in real-life scenarios. By integrating object detection technology and AR technology, the system augmented real objects with visual enhancements, providing users with visual stimuli that induced corresponding brain signals. SSVEP technology was then utilized to interpret these brain signals and identify the objects that users focused on. Additionally, an adaptive dynamic time-window-based filter bank canonical correlation analysis was employed to rapidly parse the subjects' brain signals. Experimental results indicated that the system could effectively recognize SSVEP signals, achieving an average accuracy rate of 90.6% in visual target identification. This system extends the application of SSVEP signals to real-life scenarios, demonstrating feasibility and efficacy in assisting individuals with mobility impairments and physical disabilities in object selection tasks.
本研究调查了一种基于增强现实(AR)环境和稳态视觉诱发电位(SSVEP)的脑机接口(BCI)系统。该系统旨在便于在现实生活场景中通过视觉注视来选择现实世界中的物体。通过整合目标检测技术和AR技术,该系统用视觉增强功能增强真实物体,为用户提供诱发相应脑信号的视觉刺激。然后利用SSVEP技术来解读这些脑信号并识别用户所关注的物体。此外,采用了基于自适应动态时间窗的滤波器组典型相关分析来快速解析受试者的脑信号。实验结果表明,该系统能够有效识别SSVEP信号,在视觉目标识别中平均准确率达到90.6%。该系统将SSVEP信号的应用扩展到现实生活场景中,证明了在协助行动不便和身体残疾的个体进行物体选择任务方面的可行性和有效性。