当前位置： SCI文献检索 > EXPERIMENTAL BRAIN RESEARCH期刊下所有文献 > Bötzinger-complex, bulbospinal expiratory neurones monosynaptically inhibit ventral-group respiratory neurones in the decerebrate rat.

Bötzinger-complex, bulbospinal expiratory neurones monosynaptically inhibit ventral-group respiratory neurones in the decerebrate rat.

Abstract：

:Extracellularly recorded action potentials from 49 Bötzinger-complex, bulbospinal expiratory neurones were used as triggers to compute 162 spike-triggered averages (STAs) of intracellular potentials recorded from 167 respiratory neurones in the ventral respiratory group (VRG) near the obex in 15 vagotomized, paralysed, ventilated and decerebrated rats. All of the Bötzinger-complex expiratory neurones were antidromically activated from the ipsilateral border between the C2/C3 segments of the spinal cord and discharged only during the late part of expiration with an augmenting pattern. We found evidence for monosynaptic inhibitory post-synaptic potentials (IPSPs) in 74 (approximately 44%) of the STAs computed using 34 (approximately 69%) of the trigger neurones. For vagal motoneurones, IPSPs were found in 24 of the 53 STAs of expiratory motoneurones, but in none of the 12 STAs of inspiratory motoneurones. For inspiratory neurones, IPSPs were found in 23 of the 33 STAs of bulbospinal neurones and in 6 of the 26 STAs of not antidromically activated (NAA) neurones. For expiratory neurones, IPSPs were found in one of the two STAs of bulbospinal neurones and in 20 of the 36 STAs of NAA neurones. We conclude that Bötzinger-complex, bulbospinal expiratory neurones monosynaptically inhibit bulbospinal inspiratory neurones, expiratory vagal motoneurones and other unidentified inspiratory and expiratory neurones in the VRG of rats during the late part of expiration.

journal_name

Exp Brain Res

journal_title

Experimental brain research

authors

Tian GF,Peever JH,Duffin J

doi

10.1007/s002210050612

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

173-80

issue

2

eissn

0014-4819

issn

1432-1106

journal_volume

124

pub_type

杂志文章

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