@article{1741-2552-14-2-026017, author={Wei-Long Zheng and Bao-Liang Lu}, title={A multimodal approach to estimating vigilance using EEG and forehead EOG}, journal={Journal of Neural Engineering}, volume={14}, number={2}, pages={026017}, url={http://stacks.iop.org/1741-2552/14/i=2/a=026017}, year={2017}, }