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arXiv 2106.04026cs.CVcs.AIeess.IVq-bio.NC
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高水平视觉表象任务的主体无关脑机接口

Subject-Independent Brain-Computer Interface for Decoding High-Level Visual Imagery Tasks

Korea University(高丽大学)

Dae-Hyeok Lee, Dong-Kyun Han, Sung-Jin Kim, Ji-Hoon Jeong, Seong-Whan Lee

摘要:

脑机接口(Brain-computer interface,BCI)通过识别人的状态和意图来实现人与设备之间的通信。使用脑电图(EEG)信号在人类和无人机之间进行通信是BCI领域中最具挑战性的问题之一。特别是,无人机群的控制(方向和编队)与无人机的控制相比具有更多的优势。视觉表象范式是指被试对特定的物体或场景进行视觉想象。降低受试者脑电信号的变异性对于基于BCI的实用系统是必不可少的。在这项研究中,我们提出了subepoch-wise特征编码器(SEFE),以提高性能的主题无关的任务,通过使用VI数据集。本研究是首次尝试证明在基于VI的BCI中被试之间泛化的可能性。我们使用留一主题交叉验证来评估性能。我们获得了更高的性能时,包括我们提出的模块比排除我们提出的模块。具有SEFE的DeepConvNet在六种不同的解码模型中表现出最高的性能,为0.72。因此,我们证明了通过使用我们提出的模块在具有鲁棒性能的主题无关任务中解码VI数据集的可行性。

英文摘要:

Brain-computer interface (BCI) is used for communication between humans and devices by recognizing status and intention of humans. Communication between humans and a drone using electroencephalogram (EEG) signals is one of the most challenging issues in the BCI domain. In particular, the control of drone swarms (the direction and formation) has more advantages compared to the control of a drone. The visual imagery (VI) paradigm is that subjects visually imagine specific objects or scenes. Reduction of the variability among EEG signals of subjects is essential for practical BCI-based systems. In this study, we proposed the subepoch-wise feature encoder (SEFE) to improve the performances in the subject-independent tasks by using the VI dataset. This study is the first attempt to demonstrate the possibility of generalization among subjects in the VI-based BCI. We used the leave-one-subject-out cross-validation for evaluating the performances. We obtained higher performances when including our proposed module than excluding our proposed module. The DeepConvNet with SEFE showed the highest performance of 0.72 among six different decoding models. Hence, we demonstrated the feasibility of decoding the VI dataset in the subject-independent task with robust performances by using our proposed module.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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