Fig. 3From: Review of electromyography onset detection methods for real-time control of robotic exoskeletonsNumber of publications included in each of the different EMG onset detection categories (Visual inspection—black; Threshold—light gray; Statistical—dashed grey; Machine Learning—bold gray squares; and Others—dashed bold gray) within each different application domain. Application domains considered were Robotics, Clinical, Research and OthersBack to article page