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New Findings
What is the central question of this study?
Does the parafacial respiratory group (pFRG), which mediates active expiration, recruit nasofacial and oral motoneurons to coordinate motor activities that engage muscles controlling airways in rats during active expiration.
What is the main finding and its importance?
Hypercapnia/acidosis or pFRG activation evoked active expiration and stimulated...
Key points
Hypercapnia or parafacial respiratory group (pFRG) disinhibition at normocapnia evokes active expiration in rats by recruitment of pFRG late‐expiratory (late‐E) neurons.
We show that hypercapnia simultaneously evoked active expiration and exaggerated glottal dilatation by late‐E synaptic excitation of abdominal, hypoglossal and laryngeal motoneurons. Simultaneous rhythmic expiratory activity...
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