[Status of processes of internal inhibition in the rat during a flight aboard the biosatellite "Cosmos-1129"]

Changes of conditioned reflexes were analyzed in albino rats during their 18.5 days on board the "Cosmos-1129" bio-satellite. With total lowering of the level of conditioned activity, the most affected proved to be reactions linked with internal inhibition; differentions were disinhibited, the number of intersignal reactions significantly exceeded control values. During the experiment photoperiodic desynchronosis took place, the nature of which also testified to high sensitivity of the inhibitory processes to the action of cosmic flight factors.