[Effect of monoamines microinjected into the amygdaloid nucleus on the lateral hypothalamic self-stimulation response].

The effect of serotonin and noradrenaline injections in the amygdalar nuclei on the reaction of self-stimulation of the lateral hypothalamus was studied in rats. The increase of exogenous serotonin level in the amygdala phasically intensified the self-stimulation and activated emotionally negative forms of behaviour. The increase of noradrenaline content phasically lowered the frequency of self-stimulation and evoked emotionally positive forms of behaviour which did not depend on the lateral hypothalamus stimulation.

[Effect of etimizol on behavioral responses, brain serotonin concentration and plasma corticosteroid levels].

The influence of ethymisol on behavioural reactions was studied on 100 albino rats in the "open field" and "passive avoidance" tests. It was shown that a 5 mg/kg dose of this neurotropic drug with synaptic effect, changes behavioural reactions, lowers the general emotional stress and emotional memory of the electro-cutaneous stimulation. Simultaneously the level of corticosteroids in the blood plasma significantly rises, while the serotonin content in the hypothalamus decreases.