Features of changes of higher nervous performance indicators on stress influence in preliminary gamma- radiation-exposed of rats

• Main Authors: M. V. Shelkovsky, V. V. Varetsky, A. G. Rakochi, V. V. Krushinsky
• Format: Article
• Language: English
• Published: Institute for Nuclear Research, National Academy of Sciences of Ukraine 2013-12-01
• Series: Âderna Fìzika ta Energetika
• Subjects: ionizing radiation; stress; rats’ behavior
• Online Access: http://jnpae.kinr.kiev.ua/14.4/Articles_Pdf/jnpae-2013-14-0384-Shelkovsky.pdf

Studies of active avoidance behavioral reactions (shuttle box) changes under exposure of stress (foot-shock) in the rats preliminary exposed to single total γ-radiation at doses of 0.5 and 1.0 Gy gave the following results. Reactions of conditioned behavior indices to stress are individual, but in general they are characterized by signif-icant direct effect of activation, which could be followed by depression during time period after stress applica-tion. Effects of stress in the rats previously exposed at the dose of 1.0 Gy exceed those in the animals both direct-ly after stress application and during the time periods without stress. Interaction between factors of ionizing radi-ation and stress were found for the tested indices at the dose of 1.0 Gy. Rats exposed at the dose of 0.5 Gy in-crease of direct response to stressing was not found, but it was evident in delayed responses.