title: Projections from inspiratory neurons of the nucleus retroambigualis to phrenic motoneurons in the cat.
abstract: The connection between the inspiratory neurons of the nucleus retroambigualis and the phrenic motoneurons was examined using the techniques of antidromic mapping to discover collaterals and spike-triggered averaging to detect postsynaptic potentials. Axon collaterals within the region of the C5 phrenic nucleus were found for 17 of 26 (65%) inspiratory neurons and 6 of these 17 (35%) were shown to generate excitatory postsynaptic potentials in at least one phrenic motoneuron. It was concluded that these results demonstrate a strong connection for those inspiratory neurons of the nucleus retroambigualis with a collateral within the phrenic nucleus.
authors: Mt. Sinai Hospital Research Institute, Toronto, Ontario, Canada.
authors: L
authors: L
authors: Fedorko
authors: R W
authors: RW
authors: Hoskin
authors: J
authors: J
authors: Duffin
mesh_terms: D000818:Animals; D001370:Axonal Transport; D001921:Brain / Q000502:physiology*; D002415:Cats; D003964:Diaphragm / Q000294:innervation; D005073:Evoked Potentials, Somatosensory; D005260:Female; D001239:Inhalation; D008297:Male; D009046:Motor Neurons / Q000502:physiology*; D009431:Neural Conduction; D009474:Neurons / Q000502:physiology*; D010791:Phrenic Nerve / Q000502:physiology*; D012119:Respiration; D013569:Synapses / Q000502:physiology