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
中科院分区:
文献类型:
--
作者:
Ma, Jun;Yang, Banghua;Qiu, Wenzheng;Li, Yunzhe;Gao, Shouwei;Xia, Xinxing
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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