Figure 7

Electromyography readings confirmed unilateral diaphragmatic hemiparesis and success of the external stimulation. The upper curve in both panels represents the left hemi-diaphragm and the lower curve in both panels represents the right hemi-diaphragm. A 100 Hz high pass filter was used. (a) The phrenic nerves of both hemi-diaphragms work in parallel and both hemi-diaphragms show muscle activity in parallel as depicted by the electromyography readings. (b) Following transection of the right phrenic nerve, the electromyogram of the right hemi-diaphragm does not show any muscle activity, whereas the left hemi-diaphragm shows the same activity as before.