Synaptic processes in facial motoneurons evoked by stimulation of the caudal trigeminal nucleus.

Autor: Fanardzhyan, V., Kasabyan, S., Manvelyan, L.
Zdroj: Neurophysiology; May1980, Vol. 12 Issue 3, p191-199, 9p
Abstrakt: Field potentials and postsynaptic potentials of facial motoneurons evoked by stimulation of the caudal trigeminal nucleus were investigated in acute experiments on cats by extra- and intra-cellular recording. Pre- and postsynaptic components of field potentials were found. Four types of motoneuron response were distinguished: EPSP with generation of single action potentials; a gradual shift of depolarization inducing grouped action potentials; a rhythmic discharge of action potentials arising at a low level of depolarization; and EPSPs or EPSP-IPSP sequences. The monosynaptic and (chiefly) polysynaptic nature of these responses was demonstrated. The possible mechanism of afferent control over facial motoneurons are discussed. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index