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Preterm infant receiving PULSED NTrainer stimulation during gavage feeding in the neonatal intensive care unit, with a nasogastric tube placed through the left nares (not visible); pneumatic stimulus control signals and output through the pacifier nipple are shown in the left panel: (a) voltage-controller gate signal, (b) intraluminal pressure (inside) the nipple, and (c) mechanical displacement at the nipple cylinder wall (Photo courtesy of Innara Health, Inc., Olathe, Kansas USA).
