[Neuronal analysis of the projection of the caudal trigeminal nucleus to the nucleus of the facial nerve in cats].
Peculiarities of the trigeminal nucleus caudalis neurons which are projected to the facial nucleus were studied by microelectrode recording in cats. It is shown that the mentioned neurons are localized predominantly in ventral parts of the trigeminal nucleus caudalis and adjacent lateral reticular formation. Mono- and polysynaptic activation of efferent trigeminal neurons to pyramidal impulsation is described. Repetitive discharges of these neurons to stimulation of their axons, direct stimulation of the trigeminal nucleus caudalis as well as to that of the pyramidal tract and facial nerve are recorded. The significance of the obtained data in the light for the understanding of the synaptic mechanisms of regulation of facial motoneurons activity is discussed.
D000818:Animals; D001931:Brain Mapping; D002415:Cats; D004558:Electric Stimulation; D005071:Evoked Potentials; D005154:Facial Nerve / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology; D011149:Pons / Q000502:physiology*; D011712:Pyramidal Tracts / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D009435:Synaptic Transmission; D014275:Trigeminal Caudal Nucleus / Q000502:physiology*; D014279:Trigeminal Nucleus, Spinal / Q000502:physiology*
Neĭronnyĭ analiz proektsii kaudal'nogo troĭnichnogo iadra v iadro litsevogo nerva koshki.