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Indoor Simulated Training Environment for Brain-Controlled Wheelchair Based on Steady-State Visual Evoked Potentials.
Frontiers in Neurorobotics ( IF 3.1 ) Pub Date : 2020-01-08 , DOI: 10.3389/fnbot.2019.00101
Ming Liu 1 , Kangning Wang 1, 2 , Xiaogang Chen 1 , Jing Zhao 3 , Yuanyuan Chen 4 , Huiquan Wang 2 , Jinhai Wang 2 , Shengpu Xu 1
Affiliation  

Brain-controlled wheelchair (BCW) has the potential to improve the quality of life for people with motor disabilities. A lot of training is necessary for users to learn and improve BCW control ability and the performances of BCW control are crucial for patients in daily use. In consideration of safety and efficiency, an indoor simulated training environment is built up in this paper to improve the performance of BCW control. The indoor simulated environment mainly realizes BCW implementation, simulated training scenario setup, path planning and recommendation, simulated operation, and scoring. And the BCW is based on steady-state visual evoked potentials (SSVEP) and the filter bank canonical correlation analysis (FBCCA) is used to analyze the electroencephalography (EEG). Five tasks include individual accuracy, simple linear path, obstacles avoidance, comprehensive steering scenarios, and evaluation task are designed, 10 healthy subjects were recruited and carried out the 7-days training experiment to assess the performance of the training environment. Scoring and command-consuming are conducted to evaluate the improvement before and after training. The results indicate that the average accuracy is 93.55% and improves from 91.05% in the first stage to 96.05% in the second stage (p = 0.001). Meanwhile, the average score increases from 79.88 in the first session to 96.66 in the last session and tend to be stable (p < 0.001). The average number of commands and collisions to complete the tasks decreases significantly with or without the approximate shortest path (p < 0.001). These results show that the performance of subjects in BCW control achieves improvement and verify the feasibility and effectiveness of the proposed simulated training environment.

中文翻译:

基于稳态视觉诱发电位的脑控轮椅室内模拟训练环境。

脑控轮椅(BCW)有潜力改善行动不便人士的生活质量。用户需要进行大量培训,以学习和提高BCW控制能力,而BCW控制的性能对于患者的日常使用至关重要。考虑到安全性和效率,本文建立了室内模拟训练环境,以提高BCW控制的性能。室内模拟环境主要实现BCW实施,模拟训练场景设置,路径规划和推荐,模拟操作和评分。BCW基于稳态视觉诱发电位(SSVEP),并且使用滤波器组规范相关分析(FBCCA)分析脑电图(EEG)。五项任务包括个人准确性,简单的线性路径,设计了避障,综合指导方案和评估任务,招募了10名健康受试者并进行了7天的培训实验,以评估培训环境的性能。计分和消耗命令来评估培训前后的改进。结果表明,平均准确度为93.55%,从第一阶段的91.05%提高到第二阶段的96.05%(p = 0.001)。同时,平均分数从第一节的79.88增加到最后一节的96.66,并且趋于稳定(p <0.001)。在有或没有近似最短路径的情况下,完成任务的平均命令次数和碰撞次数显着降低(p <0.001)。
更新日期:2020-01-08
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