Fig. 4.
Membrane potential of an E-Decearlycell that depolarizes at the transition from inspiration to expiration (A, B). Note the hyperpolarization of the E-Decearly cell during most of the phrenic nerve burst. Thedashed line in B correlates the first spike in the E-Decearly cell with the ongoing phrenic nerve activity. C, Short latency EPSP evoked in the same neuron by stimulation (at arrow) of the ipsilateral vagus nerve. Arrow indicates stimulus (Stim) artifact. Arrowhead indicates EPSP onset. MP, Membrane potential; Phr, phrenic nerve activity.