Figure 3From: Real-time myoelectric control of a multi-fingered hand prosthesis using principal components analysisTwo DoFs control signal generation. Wrist movements re-mapped into Ch 1 and Ch 2 signals variations, used to generate input commands for the PCA-based algorithm. Extending (ext) or flexing (flex) the wrist affected the input control signal Ch 1 . Adduction (add) and abduction (abd) movements influenced Ch 2 .Back to article page