Pneumotaxic centre and apneustic breathing: Interspecies differences between rat and cat

@article{Monteau1989PneumotaxicCA,
  title={Pneumotaxic centre and apneustic breathing: Interspecies differences between rat and cat},
  author={Roger Monteau and S. Errchidi and Philippe Gauthier and Gérard Hilaire and Paul Patrick Rega},
  journal={Neuroscience Letters},
  year={1989},
  volume={99},
  pages={311-316}
}
Pontine influences on the breathing pattern were studied in rats using either in vivo experiments in anaesthetized adult animals or in vitro experiments in newborn preparations. In cats, after anaesthesia and bivagotomy, pontine transection has been described as evoking an apneustic pattern of breathing (long sustained inspiratory discharges interrupted by short expiratory pauses). In rats, after anaesthesia, bivagotomy and pontine transection, apneustic patterns of breathing were not observed… 
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It is suggested that the mechanisms underlying NA biosynthesis continue to function under these in vitro experimental conditions and are responsible for a permanent release of endogenous NA, which slows down the respiratory frequency.
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These pontine respiratory neurons do not appear to receive a strong afferent input from the vagus, rather, vagal afferent inputs seem to be directed towards non-respiratory neurons that are located more medially in the dorsal pons.
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TLDR
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