[The similarity and differences in the circadian fluctuations in the central nervous system reaction of animals to acute gamma radiation and alcohol exposures].

24-h fluctuations in the response of CNS (occurrence of the complex of neurological disorders) were studied in white rat males which were exposed to gamma radiation (Co-50, 62.5 Gy, craniocaudally) or injected alcohol (2.25 g/kg, 15% solution, i.p.). After alcohol administration, the above fluctuations were at first almost similar to those in response to the radiation. Later, the curve of the CNS sensitivity to alcohol was leveling, rhythm phases shifted without the rhythm inversion. Neurological symptoms induced by alcohol and radiation were very much alike suggesting the existence of common mechanisms of nonspecific regulation evident early after exposure to these two factors.