title: Vestibular inputs to bulbar respiratory interneurons in the cat.
abstract: Vestibular inputs to medullary respiratory interneurons were studied in decerebrated and artificially ventilated cats. Extracellular recordings were made from 40 neurons located in the area of pre-Bötzinger complex and activated antidromically from the contralateral ventral respiratory group. Neuronal populations analyzed included inspiratory and expiratory neurons with augmenting, constant and decrementing firing patterns, and a late inspiratory neuron. Seventeen neurons responded to ipsilateral and/or contralateral vestibular nerve electrical stimulation. These responses were observed in all seven cell types. Most neuronal reflex responses consisted of inhibition, while a few consisted of either excitation or a combination of both inhibition and excitation. These results indicate that pre-Bötzinger respiratory interneurons, which may be involved in respiratory rhythmogenesis, also participate in vestibulorespiratory responses.
authors.affiliation: The Rockefeller University, New York, NY 10021-6399, USA.
authors.forename: K
authors.initials: K
authors.lastname: Nakazawa
authors.forename: Y
authors.initials: Y
authors.lastname: Zheng
authors.forename: T
authors.initials: T
authors.lastname: Umezaki
authors.forename: A D
authors.initials: AD
authors.lastname: Miller
mesh_terms: D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D005260:Female; D007395:Interneurons / Q000502:physiology*; D008297:Male; D015656:Respiratory Mechanics / Q000502:physiology*; D013116:Spinal Cord / Q000166:cytology / Q000502:physiology*; D014725:Vestibular Nerve / Q000166:cytology / Q000502:physiology; D014722:Vestibule, Labyrinth / Q000502:physiology*