*2.3.2 Exclusion criteria*

The remains still need to be under consideration before being used as a definitive reference. For example, some titles or abstracts, including the typed terms but different prior research aims, should be excluded. We would not recommend any literature review without one own experiment. Additionally, reports aiming at pure MI therapy without BCI, or invasive MI-BCI research, would be withdrawn. Other factors such as a hybrid control method, which might positively influence the feasibility of an MI-controlled BCI game, should be excluded. The lists below are the detailed EC.



• Motor imagery is not for BCI.

#### **Table 4.**

*ICQ form. Yes (Y) for 1, Partially (P) for 0.5, and No (N) for 0.*

*Improving the Brain-Computer Interface Learning Process with Gamification in Motor Imagery:… DOI: http://dx.doi.org/10.5772/intechopen.105715*

• Gamified MI-BCI system with other control or feedback methods as a factor that could influence the result, such as a hybrid BCI control system with MI and P300 together [28].
