Membrane potential and synaptic input to an E-Dec neuron recorded in the VRG. Bottom panel, EPSP evoked in the same E-Dec neuron by electrical stimulation of the ipsilateral vagus nerve. Arrow indicates stimulus (Stim) artifact. Arrowhead indicates EPSP onset. Phr, Phrenic nerve; MP, membrane potential; Noise, amplified and filtered (100–10,000 Hz) MP signal.