[Level of dopamine in structures of the nigro-striatal and mesolimbic systems of the brain in experimental pathology of higher nervous activity in the rat].

Rats, unable to elaborate a discriminative avoidance reflex to two acoustic stimuli in conditions of time deficit, and displaying non-adaptive forms of behaviour in the process of conditioning (non-escape of the electric shocks, absence of responses to both differentiated stimuli), possess a lower dopamine level in the striatum and a higher one in the olfactory tubercle in comparison to the animals without non-adaptive reactions.