Figure 3

Instrumentation of the left hemi-diaphragm. The orientation is the same in all pictures: the rostral direction is at the bottom and the caudal direction at the top of the picture. ♥ designates the heart.▲ designates the sternum. ● designate the pericardium. ■ designates the diaphragm. ♦ designates the lung. ⌂ designates the thymus. (a) Detailed depiction of the accelerometer used in the experiment. (b) Positioning of the accelerometer to the most cranial point of the swine’s left hemi-diaphragm. (c) Fixation of the accelerometer to the diaphragm via four simple stitches to the edges of the accelerometer. (d) Detailed depiction of the hook electrodes used for electromyogram readings. (e) Implantation of the hook electrodes to the left hemi-diaphragm. (f) Positioning of the hook electrodes as lateral as possible and close to the chest wall with 10 mm distance between its poles.