RT Journal Article
SR Electronic
T1 Monosynaptic inhibition of phrenic motoneurons: a long descending projection from Botzinger neurons
JF The Journal of Neuroscience
JO J. Neurosci.
FD Society for Neuroscience
SP 2350
OP 2353
DO 10.1523/JNEUROSCI.04-09-02350.1984
VO 4
IS 9
A1 Merrill, EG
A1 Fedorko, L
YR 1984
UL http://www.jneurosci.org/content/4/9/2350.abstract
AB Synaptic connections between medullary expiratory neurons and phrenic motoneurons were studied in anesthetized cats using spike-triggered averaging of synaptic noise in phrenic motoneurons. Monosynaptic inhibition of phrenic motoneurons originating from the rostral medullary expiratory neurons of the Botzinger complex was revealed. Neither mono- nor disynaptic inhibition from expiratory neurons of the nucleus retroambigualis was found. It was concluded that Botzinger complex expiratory neurons make long descending inhibitory connections with phrenic motoneurons: the expiratory neurons of the nucleus retroambigualis do not appear to make synaptic connections with phrenic motoneurons.