Vector Autoregressive Hierarchical Hidden Markov Models for Extracting Finger Movements Using Multichannel Surface EMG Signals

Figure 2

(a) shows sample EMG channels (2, 7, 15, and 15). (b) shows only channel 7 raw EMG signal (blue) with the visual cues/classes (red). This figure is an example of the latencies between visual cue and the EMG onset. This is also noticeable for the movement endings which are delayed with respect to the visual cue. Another important piece of information presented in this figure is similarity between EMG waveforms for the same movements (i.e., class 12).

(a)

(b)