Cough center (brainstem network in medulla and pons)

The cough center refers to a distributed network of neurons primarily in the ventrolateral medulla (including the caudal ventral respiratory group, cVRG), raphe nuclei, nucleus of the solitary tract (nTS), and pons, rather than a single discrete structure. It integrates sensory inputs from vagal afferents detecting airway irritants and coordinates the sequential motor phases of coughing—inspiration, compression, and expiration—via efferent signals to respiratory muscles through the vagus, phrenic, and spinal nerves. This network shares elements with the respiratory rhythm generator, reconfiguring during cough to produce forceful expulsion while adapting from normal breathing patterns. In disease, hypersensitivity in this circuit contributes to chronic cough and airway protection failures, as seen in asthma or post-viral conditions. Antitussive drugs target multiple sites within this network, suppressing cough but risking diminished airway clearance. Recent studies highlight roles for additional nuclei like SP5C in cough initiation, emphasizing its multifunctional brainstem basis.

Other names

Cough center of the medullaCough center in upper brainstemcaudal ventral respiratory group (cVRG)ventrolateral medulla cough network

Suppression of brainstem neuronal activity; Inhibition at multiple sites (e.g., nTS, ventrolateral medulla); Reduction of cough network reconfiguration; Modulation of glutamatergic transmission in cVRG