Fig. 8From: A novel brain-controlled wheelchair combined with computer vision and augmented realityThe time course. In the offline experiment, the time course included four stages: the mode selection stage, cue stage, flash stage, and decoding stage. In the flash stage, we used orange rectangular stimuli to construct the flash. Each flash lasted for 400Â ms, each stimulus appeared for 200Â ms and then disappeared for 200Â ms, and four flashes appeared for each option. The parameters used in the optimization experiment were the same as those used in the offline experiment, but the number of flashes in the optimization experiment increased from 2 to 8. The parameters used in the online experiment were the same as those used in the offline experiment, and the flash stage also contained 4 flashes. However, the online experiment included one more stage: the execution stage, in which the BCW executed the decoding resultsBack to article page