[Monosynaptic excitation of the motor neurons of the nucleus of the facial nerve induced by stimulation of brainstem structures].

Synaptic inputs from the midbrain and medulla oblongata to the facial motoneurones were studied in anesthetized cats in acute experiments: the effects of stimulation of the n. reticularis parvocellularis, the interstitial nucleus of Cajal and the nucleus of Darkschewitsch. Stimulation of these nuclei evoked monosynaptic excitatory postsynaptic potentials in facial motoneurones which in turn generated single APs. The somatic localization of these synapses is suggested. Convergence of the inputs has been revealed.