Cortical effects of BCI training measured with fNIRS

This study investigates the cortical training effects using a 2-class motor imagery (MI) based BCI. Twelve subjects were trained to use right hand or feet MI to control a cursor on a screen. The feedback was calculated by using features based on the EEG. To assess which areas are involved in the training, and how activity in these areas changes over time, three fNIRS measurements were applied before, in between and after the training. The statistical analysis of the measurement revealed that significant activity changes in the involved areas during the training can be found and that they occur accordingly to the task.