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Control of abdominal and expiratory intercostal muscle activity during vomiting - Role of ventral respiratory group expiratory neuronsThe role of ventral respiratory group (VRG) expiratory (E) neurons in the control of abdominal and internal intercostal muscle activity during vomiting was investigated in cats. Two series of experiments were performed: in one, the activity of VRG E neurons was recorded during fictive vomiting in cats that were decerebrated, paralyzed, and artificially ventilated; in the second, the abdominal muscle activity during vomiting was compared before and after sectioning the axons of descending VRG E neurons in decerebrate spontaneously breathing cats. The results show that about two-thirds of VRG E neurons that project at least as far caudally as the lower thoracic cord contribute to internal intercostal muscle activity during vomiting. The remaining VRG E neurons contribute to abdominal muscle activation. As shown by severing the axons of the VRG E neurons, other, as yet unidenified, inputs (either descending from the brain stem or arising from spinal reflexes) can also produce abdominal muscle activation.
Document ID
19880041462
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Miller, Alan D.
(Rockefeller Univ. New York, NY, United States)
Tan, L. K.
(Rockefeller Univ. New York, NY, United States)
Suzuki, Ichiro
(Rockefeller University New York, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Publication Information
Publication: Journal of Neurophysiology
Volume: 57
ISSN: 0022-3077
Subject Category
Aerospace Medicine
Accession Number
88A28689
Funding Number(s)
CONTRACT_GRANT: NIH-RR-07065
CONTRACT_GRANT: NSF BNS-83-17651
CONTRACT_GRANT: NAG2-164
CONTRACT_GRANT: NSG-2380
CONTRACT_GRANT: NIH-NS-20585
CONTRACT_GRANT: NIH-NS-02619
Distribution Limits
Public
Copyright
Other

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