Intracellular potentials and discharge patterns of expiratory neurons in the caudal ventral respiratory group: influence of phasic pulmonary afferent input.
In decerebrate paralyzed cats, the membrane potential (MP) patterns of 12 augmenting expiratory (E) neurons in the caudal ventral respiratory group, and phrenic and recurrent laryngeal activities, were compared for inspiratory (I) phases with and without lung inflation. No-inflation produced, in the MPs of E neurons, larger hyperpolarization during I and during early E (associated with increased early-E laryngeal activity), suggesting an increase of inhibitory inputs from I neurons and early-E neurons, respectively.
Department of Physiology, Albert Einstein College of Medicine, Bronx, NY 10461.
W R
WR
See
M I
MI
Cohen
R
R
Barnhardt
C N
CN
Christakos
D000200:Action Potentials; D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D002415:Cats; D003655:Decerebrate State; D004558:Electric Stimulation; D007823:Laryngeal Nerves / Q000502:physiology*; D008168:Lung / Q000294:innervation* / Q000502:physiology; D008564:Membrane Potentials; D010791:Phrenic Nerve / Q000502:physiology*; D012119:Respiration; D012125:Respiratory Center / Q000502:physiology*