[Effect of blockade of the dopamine, serotonin and cholinergic receptors on opioid modification of habituation in the visual cortex of the turtle].

Blockade of dopamine receptors by haloperidol and serotonin receptors by lysergic acid diethylamide in turtle visual cortex, effectively changes the modifying effect of agonists of opioid mu-, delta-, kappa-, and sigma-receptors: morphine, D-Ala2, D-Leu5-enkephalin, bremazocine and SKF 10.047, on dynamics of habituation of orthodromic evoked potential. Muscarinic cholinergic blocker atropine disturbs the habituation modification by morphine and bremazocine. Conclusion is made, that modifying effects of opiate agonists on habituation are the result of interaction of activated opiate and transmitter receptors.