Toward a Brain-Computer Interface- and Internet of Things-Based Smart Ward Collaborative System Using Hybrid Signals

Figure 7

The online asynchronous experiment. In the calibration phase, 10 blink prompts were presented at intervals of 20 s. In the mode selection stage, 4 s of time was provided to complete command number adjustment and attention switch selection. In the online experimental phase, there were 10 subtrials; in each subtrial, 6 commands were required to be selected, and after each subtrial, there was a 60 s rest period before the next subtrial began. In the end, the subject switched the attention switch to perform another round.