Role of pre-inspiratory neurons in vestibular and laryngeal reflexes and in swallowing and vomiting.
Fifteen pre-inspiratory (Pre-I) neurons were extracellularly recorded in the pre-Bötzinger complex and their involvements in vestibular (VN) and superior laryngeal (SLN) nerve reflexes and in fictive swallowing and vomiting were tested in decerebrated and artificially ventilated cats. Both type I (1 of 9) and type II (1 of 6) pre-I neurons could project to the contralateral ventral respiratory group region. Pre-I neurons changed their firing during VN and SLN respiratory reflexes and fictive swallowing and vomiting; different response properties were observed among individual pre-I neurons. These results suggest that pre-I neurons are a population of heterogeneous and multi-functional propriobulbar neurons.
Zheng
Y
Y
Department of Physiology, West China University of Medical Sciences, Chengdu, PR China.
Umezaki
T
T
Nakazawa
K
K
Miller
A D
AD
D000818:Animals; D002415:Cats; D003679:Deglutition / Q000502:physiology*; D005260:Female; D007830:Larynx / Q000502:physiology*; D008297:Male; D009474:Neurons / Q000502:physiology*; D012018:Reflex / Q000502:physiology*; D012119:Respiration / Q000502:physiology; D014726:Vestibular Nuclei / Q000502:physiology*; D014839:Vomiting / Q000503:physiopathology*