[Conditioned reflex switching after brief cerebral ischemia in the rat]

In rats reanimated after 5-minute circulation stoppage, conditioned switching-over was elaborated in 8 months after resuscitation on the basis of an alimentary and a defensive instrumental reflexes acquired at earlier terms after resuscitation. Elaboration of switching-over, according to the percentage of correct reactions to a phasic and a tonic conditioned stimuli, proceeded in reanimated rats as in intact animals, but the reanimated rats had more wrong reactions during elaboration of switching-over and at acute and passive extinction. Acute extinction of alimentary and defensive conditioned reflexes involved in the switching-over went slower in reanimated rats than in the intact ones. A conclusion is made that rats with a short-term brain ischemia, retain some deficit of internal inhibition processes in a remote post-resuscitation period, manifested at conditioned switching-over.