Experimenters' Influence on Mental-Imagery based Brain-Computer Interface User Training

Context: Motor Imagery based Brain-Computer Interfaces (MI-BCIs) enable their users to interact with digital technologies, e.g., neuroprosthesis, by performing motor imagery tasks only, imagining hand movements, while brain activity is recorded. To control MI-BCIs, must train activity. During such training, experimenters have a fundamental role, they motivate participants. However, influence had never been formally assessed for MI-BCI user training. In other fields, social psychology, gender was found experimental outcomes, behavioural or neurophysiological measures. Objective: Our aim evaluate if the influenced training i.e., performances and user-experience. Methods: We performed an experiment involving 6 (3 women) each 5 women men (60 participants) perform right versus left over one session. then studied user-experience, according experimenters’ subjects’ gender. Results: A significant interaction between participants’ on evolution of trial-wise performances. Another participants tension average Conclusion: Experimenters could depending tension. Significance: outcomes should be better controlled, reported further benefit from it preventing any bias.