Noradrenergic modulation of glutamate-induced excitatory responses in single neurons of the red nucleus: An electrophysiological study

•Responses of single red nucleus neurons to the application of glutamate and noradrenaline.•Depressive action of noradrenaline on glutamate-induced excitations.•Alpha2 noradrenergic receptors mediate depressive action of noradrenaline.•The involvement of beta adrenergic receptors is less prominent and the effect is various.•Stress leads to an initial attenuation of the relay function of the red nucleus.