The technique of differentiation of the envelope of total activity of the diaphragm motoneurons in anesthetized cats revealed that augmentation of the chemostimulus induced a linear growth of the latetinspiration inhibition which increased after bilateral vagotomy. Duration of the postinspiration phase does not depend on the level of activation of the chemoreceptors and lung stretch receptors. Vagotomy induces a discrete elongation of the postinspiration phase due, apparently, to effects from the structures of rostral pons.
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