| Role of respiratory and non-respiratory neurones in the region of the NTS in the elaboration of the sneeze reflex in cat. | |
| | |
MedLine Citation:
|
PMID: 9369303 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Extracellular recordings were made in the dorsal respiratory group (DRG) and adjacent reticular formation following single-shock stimulation of the anterior ethmoidal nerve (AEN) and during sneeze evoked by repetitive stimulation of the AEN in nembutal-anaesthetized, curarized and ventilated cats. These neurones were characterised according to (i) their activity during the respiratory cycle (as inspiratory augmenting or decrementing (I Aug or I Dec), expiratory augmenting or decrementing (E Aug or E Dec), silent or tonic), and (ii) their axonal projection (bulbospinal or non-bulbospinal-non-vagal (BS or NBS-NV)). Following single-shock stimulation of the AEN, most of the inspiratory neurones were transiently inhibited, whereas E Aug neurones were activated and E Dec neurones were activated and then inhibited. Silent neurones responded with a multispike or a paucispike pattern. Following repetitive stimulation of the AEN and during the resulting sneeze reflex, I Aug neurones increased their activity in parallel with the phrenic activity, I Dec neurones fired at the onset and at the end of the inspiration, E Dec and some silent neurones fired either during the compressive phase or after the expulsive phase, whereas E Aug and some silent neurones fired during the expulsive phase. We conclude that sneeze involves a reconfiguration of the central respiratory drive which uses, at least partly, the respiratory network to trigger a non-ventilatory defensive motor act. |
| | |
Authors:
|
F Wallois; L Bodineau; J M Macron; D Marlot; B Duron |
Related Documents
:
|
18440993 - Selective lesion of retrotrapezoid phox2b-expressing neurons raises the apnoeic thresho... 7116173 - Characteristics of midbrain respiratory neurons in sleep and wakefulness in the cat. 15292673 - P300 event-related potential amplitude and impulsivity in cocaine-dependent subjects. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Brain research Volume: 768 ISSN: 0006-8993 ISO Abbreviation: Brain Res. Publication Date: 1997 Sep |
Date Detail:
|
Created Date: 1997-12-18 Completed Date: 1997-12-18 Revised Date: 2003-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 0045503 Medline TA: Brain Res Country: NETHERLANDS |
Other Details:
|
Languages: eng Pagination: 71-85 Citation Subset: IM |
Affiliation:
|
URA CNRS 1331, Laboratoire de Neurophysiologie, Faculté de Médecine, Université de Picardie, Amiens, France. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Cats Electric Stimulation Female Male Neurons / physiology* Phrenic Nerve / physiology Reflex / physiology* Respiratory System / innervation* Sneezing / physiology* Solitary Nucleus / cytology, physiology* Spinal Cord / cytology, physiology* Vagus Nerve / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Melatonin suppression of PC12 cell growth and death.
Next Document: Reduction in the ratio of beta-preprotachykinin to preproenkephalin messenger RNA expression in post...