Figure 6.

Offline classification using surface electromyogram (EMG) or individual motor units. A: the confusion matrix shows the overall individual classification accuracy across movements when the first 10 principal components from the root-mean-square (RMS) EMG activity were used as input to an linear discriminant analysis (LDA) classifier. The overall individual accuracy is the average accuracy for each finger across 10 testing sets. B: the confusion matrix shows the overall classification accuracy across movements when the firing rates of 10 identified motor units were used for classifier input into an LDA.