P300 BCI with stimuli presented on moving objects

Abstract

In the P300 brain-computer interface, visual stimuli are presented at spatially fixed loca-tions. Can this BCI work if the stimuli positions are allowed to move, e.g., when attached to different moving parts of robotic devices or to virtual objects in a video game? We designed a simple P300 BCI game with moving locations of stimuli and tested it in a four session experi-ment. Able-bodied participants played this game in either a single-trial (n=6) or a triple-trial (n=6) mode through all sessions. All of them performed better than randomly, and most of them maintained a high level of interest to the task up to the last sessions. Our study demonstrates that the P300 BCI can be extended to a version with moving stimuli positions. 1