A large EEG dataset for studying cross-session variability in motor imagery brain-computer interface.

A large EEG dataset for studying cross-session variability in motor imagery brain-computer interface.
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DOI:
10.1038/s41597-022-01647-1
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发表时间:
2022-09-01
期刊:
影响因子:
9.8
通讯作者:
Xia, Xinxing
Xia, Xinxing
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Ma, Jun;Yang, Banghua;Qiu, Wenzheng;Li, Yunzhe;Gao, Shouwei;Xia, Xinxing

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在构建实用且鲁棒的脑机接口(BCI)时,由于EEG信号的大的可变性,来自多天的EEG(EEG)的运动想象(MI)的分类是一个长期的挑战。我们收集了来自5个不同日期的25名受试者的MI的大型数据集,这是第一个开放访问数据集,用于解决5个不同日期的大量受试者的BCI问题。该数据集包括每个受试者5个不同日期(间隔2-3天)的5个会话数据。每个会话包含100个左手和右手MI试验。在这份报告中,我们提供了三种情况下的基准分类精度,即会话内分类(WS),跨会话分类(CS)和跨会话适应(CSA),具有特定于主题的模型。WS实现了高达68.8%的平均分类准确率,而CS由于跨会话可变性而将准确率降低到53.7%。然而,通过自适应,CSA将准确率提高到78.9%。我们预计这个新的数据集将大大推动MI BCI研究在解决跨会话和跨学科挑战方面的进一步进展。
In building a practical and robust brain-computer interface (BCI), the classification of motor imagery (MI) from electroencephalography (EEG) across multiple days is a long-standing challenge due to the large variability of the EEG signals. We collected a large dataset of MI from 5 different days with 25 subjects, the first open-access dataset to address BCI issues across 5 different days with a large number of subjects. The dataset includes 5 session data from 5 different days (2–3 days apart) for each subject. Each session contains 100 trials of left-hand and right-hand MI. In this report, we provide the benchmarking classification accuracy for three conditions, namely, within-session classification (WS), cross-session classification (CS), and cross-session adaptation (CSA), with subject-specific models. WS achieves an average classification accuracy of up to 68.8%, while CS degrades the accuracy to 53.7% due to the cross-session variability. However, by adaptation, CSA improves the accuracy to 78.9%. We anticipate this new dataset will significantly push further progress in MI BCI research in addressing the cross-session and cross-subject challenge.
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