Figure 4 - Diagram showing the opposite gradients in the firing frequency and the burst duration of the different types of swallowing neurons.
From the following article
Electrophysiologic characterization of the swallowing pattern generator in the brainstem
André Jean and Michel Dallaporta
GI Motility online (2006)
doi:10.1038/gimo9
Ins, interneurons; Mns, motoneurons; Pgglns, preganglionic neurons.
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