Fig. 4.

BCI training performances over time. BCI training performances over time. Top: Offline performances (%) of the Bayesian classifier (2), as determined through the cross-validation procedure described in the BCI training section. The bar plots represent ± standard deviation (std). Bottom: Real-time, online BCI-VRE performances expressed as the course completion time (left) and successful stop score (right), determined as explained in Fig. 1. The bar plots represent ± std, and data points with no bars indicate that only one VRE session was performed on that day. Note that the participant performed less VRE sessions as the study progressed to make time for more BCI-FES walking sessions