Fig. 2
From: Surface EMG-based quantification of inspiratory effort: a quantitative comparison with Pes
Exemplary excerpt of relevant signals during assisted ventilation. The orange line is the estimated curve for the chest-wall recoil \(\textit{E}_{\mathrm{cw}} \textit{V}\) and the grey line is the raw \(\textit{P}_{\mathrm{es}}\) signal before removal of artifacts. The envelope of the automatically selected EMG channel is denoted by \({\mathrm{EMG}}_{\mathrm{sel}}\) (green line). The shaded areas correspond to PTP and ETP measures. ETP is calculated against an adaptive baseline (black line in the bottom graph)