[The role of the dopamine-reactive systems of the cortex and neostriatum in organizing situational conditioned reflexes].

The nigrostriatal dopamine-reactive (DA) system was shown to participate more in spatial analysis of conditioned signals, whereas the mesocortical DA system was rather more involved in the analysis of the signals' biological significance in dogs. The DA system of the caudate nucleus was involved in realisation of cognitive programs rather, whereas the putamen's DA system--in realisation of the motor ones. The coordinated activity of different levels of the DA system seems to be necessary for organization of the goal-directed behaviour.