Neuronal activity recorded extracellularly in chronically decentralized in situ canine middle cervical ganglia

Canadian Journal of Physiology and Pharmacology
J A Armour

Abstract

In chronically decentralized in situ middle cervical ganglia of 10 dogs, 279 spontaneously active neurons were identified. One hundred and ten (39%) of these were spontaneously active during specific phases of the cardiac cycle, primarily during systole, and the activity of nearly half of these cardiovascular-related neurons was modified by gentle mechanical distortion of the vena cavae, heart, or thoracic aorta. Another 60 (22%) of the identified neurons had respiratory--related activity, but the activity of only 2 of them was modified by gentle mechanical distortion of pulmonary tissue. Twenty-nine of the other 109 identified neurons were activated by gentle mechanical distortion of localized regions of the neck, ventral thoracic wall, or ventral abdominal wall. Because of the presence of activity in the chronically decentralized middle cervical ganglion, these data infer that some afferent neurons are located in the thoracic autonomic nervous system. Some middle cervical ganglion neurons were activated by single 1-4 ms stimuli delivered to a nerve connected to the ganglion. During repetitive stimuli delivered at 0.5 Hz none were activated after a fixed latency following the stimuli. Many more neurons were activated by 10- to...Continue Reading

Citations

Aug 1, 1994·Journal of the Autonomic Nervous System·A L SicaJ A Armour
Jun 12, 2009·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Jeffrey L ArdellJ Andrew Armour
Nov 16, 2013·PloS One·John G KingmaJacques R Rouleau
Aug 19, 2015·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Una BuckleyJeffrey L Ardell
Apr 22, 2016·The Journal of Physiology·J L ArdellI H Zucker
Aug 30, 2016·Autonomic Neuroscience : Basic & Clinical·Emily Wake, Kieran Brack
Sep 4, 2016·Autonomic Neuroscience : Basic & Clinical·Manish KallaDavid J Paterson
Jul 24, 2004·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·J Andrew Armour
Feb 29, 2020·American Journal of Physiology. Heart and Circulatory Physiology·Erica A DaleAman Mahajan
Sep 16, 2015·American Journal of Physiology. Heart and Circulatory Physiology·Jeffrey L ArdellJ Andrew Armour
May 12, 1998·The American Journal of Physiology·J A ArmourJ L Ardell

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