**1.4 Research question**

This paper designs research questions (RQ ) and a search plan using a topic-relevant review for the template [25]. One main RQ is: whether gamification of MI-BCI is feasible as a training method. Specifically, this review answers 2 RQs presented below (see **Table 1**).


#### **Table 1.**

*Two RQs with their detailed aspects of questions.*
