Ethological approach to studying mature P. hamadryas and M. mulatta males has revealed a wide spectrum of changes in individual and zoosocial behaviour in response to the administration of different alcohol doses and stress stimuli. It has been established that neuroendocrine basis for the depression of psychic and locomotor activities developing in conditions of alcohol intoxication and emotional stress is an extremely high release of catecholamines and the increase of glucocorticoid secretion accompanied by a sharp decrease in androgen products. It should be noted that the exposure to stress stimuli during consumption of small alcohol doses intensifies depression-like stress-induced behaviour of monkeys.
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