title: [The relation of circadian variations of heuristic behavior and CNS radioresistance in animals].
abstract: There has been studied the influence of g-radiation (60Co, 62.5 Gy, craniocaudal) on circadian dynamics of heuristic behaviour (the elements of rational-discriminative activity) of male white rats. There has been found equivocal nature of radiation action: mostly manifestations of some symptoms of neurologic disturbances observed in definite daily periods make difficult realizing behavioural act, but in the other cases such event is not observed (acrophases of both processes coincide). After disappearance of observed neurologic manifestations of central nervous system damage (symptoms of early transitory neurologic disturbances) during the short period of time after exposure to radiation the inversion of circadian rhythm of heuristic behaviour has not been found. The changes are expressed in significant increase of values of extremums and mesor in comparison with control groups not exposed to radiation. By 30 minute after exposure the process loses signs of rhythm, acquires smooth character and mesor response significantly decreases.
authors.affiliation: State Scientific-Research Experimental Institute of Aviation and Space Medicine, Moscow.
authors.forename: I B
authors.initials: IB
authors.lastname: Ushakov
authors.forename: O E
authors.initials: OE
authors.lastname: Davydova
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology* / Q000528:radiation effects; D002490:Central Nervous System / Q000503:physiopathology* / Q000528:radiation effects; D002940:Circadian Rhythm / Q000502:physiology / Q000528:radiation effects*; D005720:Gamma Rays / Q000009:adverse effects*; D008297:Male; D011836:Radiation Tolerance; D051381:Rats