Abstract
With the development of wearable technology, portable wireless systems have been used gradually for collecting electroencephalogram (EEG) signals. However, the introduction of portable collection devices always means a descent in signal-to-noise ratio (SNR) of EEG. Subject-independent brain-computer interface (BCI) avoids conventional calibration procedure for new users. However, whether subject-independent model can be used in cross-platform BCI has not been discussed so far. This paper transplanted the subject-independent model from a high-SNR platform to a lower one for recognition in P300-Speller. After comparing their EEG features elicited from diverse collection platforms, a model adjustment strategy was proposed to increase recognition accuracy. By model adjustment, the average accuracy was 85.00% in online spell experiments. The results indicate it is feasible for subject-independent model transplantation, especially after model adjustment strategy. It provides technology supported for further development of cross-platform BCI.
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Acknowledgements
Research is supported by National Natural Science Foundation of China (No. 91520205, 81222021, 31271062, 31500865, 81571762, 61172008, 81171423, 30970875, 90920015), National Key Technology R&D Program of the Ministry of Science and Technology of China (No.2012BAI34B02), Tianjin Key Technology R&D Program (No. 15ZCZDSY00930, 13JCQNJC13900, 15JCYBJC29600) and Program for New Century Excellent Talents in University of the Ministry of Education of China (No. NCET-10-0618).
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Z. Zhang contributed equally to this work.
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Zhao, Y., Wang, Z., Zhang, Z. et al. A transplantation of subject-independent model in cross-platform BCI. Int. J. Mach. Learn. & Cyber. 9, 959–967 (2018). https://doi.org/10.1007/s13042-016-0620-1
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DOI: https://doi.org/10.1007/s13042-016-0620-1