Fig. 3.

Qualitative assessment of the database signals. For each database file all signals were analyzed individually. iEMG signals/channels considered “good” are represented with green, “questionable” with grey and “bad” with red color (left). Qualitative analysis of recorded iEMG channels presented in absolute numbers (right). iEMG signals/channels considered “good” are represented with green, questionable (“?”) with grey and “bad” with red colour.