Four psychotypes differing by cognitive activity and psychoemotional reactions were distinguished in a population of orchiectomied Wistar rats and in a population of intact animals on the model of a complex cognitive test combined with the free choice method. With similar parameters of cognitive activity, the psychotypes of castrated rats were inferior to those of intact animals by the number of psychoemotional reactions and levels of locomotor activity. Infradian rhythms of spontaneous locomotor activity with a 4-day period were detected in intact and castrated rats. These rhythms did not change under the effect of mental stress, associated with food-getting behavior training, and did not depend on testosterone level.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 155, No. 2, pp. 241-246, February, 2013
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Kondashevskaya, M.V., Diatroptov, M.E. Behavioral Characteristics of Ovariectomied Wistar Rats Trained in a Maze. Effect of Mental Stress and Castration for Infradian Rhythms. Bull Exp Biol Med 155, 272–276 (2013). https://doi.org/10.1007/s10517-013-2130-4
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DOI: https://doi.org/10.1007/s10517-013-2130-4