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. Author manuscript; available in PMC: 2013 Mar 15.
Published in final edited form as: Respir Physiol Neurobiol. 2011 Dec 22;180(0):305–310. doi: 10.1016/j.resp.2011.12.007

Fig. 3.

Fig. 3

Phrenic and hypoglossal nerve recordings (PNA, HNA) 1h after transection. A. Identifiable but sporadic low amplitude PNA bursts after increase of extracellular K+. B. Sporadic PNA bursts during hypercapnia (12% CO2). Comparison of eupneic HNA amplitude and spinal cord generated PNA is illustrated in overlays of PNA (black) and HNA (gray).