Neuroscience and Behavioral Physiology

, Volume 28, Issue 5, pp 527–532 | Cite as

Effects of hippocampectomy on the development and recovery of a conditioned reflex to time in rats

  • M. G. Vodolazhskaya
Article
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Abstract

Experiments were carried out on rats to study the dynamics of recovery of a conditioned reflex to time after electrolytic lesioning of the dorsal hippocampus and the effects of hippocampectomy on the development of this response. Lesioning of the hippocampus deranged the restoration of a conditioned reflex to time which had been fixed before surgery. In conditions of limited hippocampal damage, the conditioned reflex to time recovered earlier than in sham-operated animals. Animals with more significant damage showed delays in the recovery of the response to time. After hippocampectomy without initial training, the conditioned reflex to time could not be developed regardless of the extent of damage to the hippocampus. This process was also not affected by doses of phenamine of 0.05 mg/kg.

Keywords

Conditioned Stimulus Unconditioned Stimulus Conditioned Response Initial Training Suprachiasmatic Nucleus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    O. S. Adrianov, “Cerebral interactions of cognitive and emotional activity,” Zh. Vyssh. Nerv. Deyat.,45, No. 3, 441 (1995).Google Scholar
  2. 2.
    É. B. Arushanyan, “The contribution of the neostriatum to the rhythmic organization of brain activity and the adaptive behavior of animals,” Usp. Fiziol. Nauk.,23, No. 1, 58 (1992).Google Scholar
  3. 3.
    É. B. Arushanyan, V. A. Baturin, and A. V. Popov, “The suprachiasmatic nucleus of the hippocampus as a regulator of the circadian system in mammals,” Usp. Fiziol. Nauk.,19, No. 2, 67 (1988).Google Scholar
  4. 4.
    É. B. Arushanyan, V. A. Baturin, A. V. Popov, et al., “The effects of lesioning the suprachiasmatic nuclei of the hippocampus on swimming dynamics and haloperidol catalepsy in rats,” Fiziol. Zh. SSSR,74, No. 9, 1221 (1988).Google Scholar
  5. 5.
    Ya. Buresh, O. Bureshova, and D. P. Houston, Methods and Basic Experiments for the Study of the Brain and Behavior [in Russian], Vysshaya Shkola, Moscow (1991).Google Scholar
  6. 6.
    O. S. Vinogradova, E. S. Brazhnik, V. F. Kichigina, and V. S. Stafekhina, “Modulation by cholinergic substances of hippocampal neuron responses to sensory stimuli,” Zh. Vyssh. Nerv. Deyat.,45, No. 1, 118 (1995).Google Scholar
  7. 7.
    T. A. Mering and E. I. Mukhin, “The effects of hippocampal lesions on conditioned reflexes to time,” Zh. Vyssh. Nerv. Deyat.,21, No. 6, 1147 (1971).Google Scholar
  8. 8.
    T. A. Mering, A. A. Ungiadze, and I. V. Viktorov, “The state of conditioned reflex activity and the EEG in rats after cholic acid lesioning of the hippocampus,” in: Collected Works, Science Research Institute of the Brain, No. 17, USSS Academy of Medical Sciences [in Russian] (1990), p. 140.Google Scholar
  9. 9.
    B. S. Bunney, Y. R. Walter, M. Kuhar, et al., “D- and L-amphetamine steroisomers: Comparative potencies in affecting the firing of central dopaminergic and noradrenergic neurons,” Psychopharmacol. Commun.,1, 177 (1975).PubMedGoogle Scholar
  10. 10.
    S. D. Glick and R. C. Marsanico, “Time-dependent changes in amphetamine self-administration following frontal cortex ablation in rats,” J. Comp. Physiol. Psychol.,88, 355 (1975).PubMedCrossRefGoogle Scholar
  11. 11.
    S. D. Glick, R. C. Marsanico, and S. Greenstein, “Differential recovery of function following caudato-hippocampal and striatal lesions in mice,” J. Comp Physiol. Psychol.,86, 787 (1974).PubMedCrossRefGoogle Scholar
  12. 12.
    J. F. Konig and R. A. Lippel, The Rat Brain. A Stereotaxic Atlas, R. E. Krieger Publishers, New York (1963).Google Scholar
  13. 13.
    V. G. Laties and B. Weiss, “Influence of drugs on behavior controlled by internal and external stimuli,” J. Pharmacol. Exp. Therapeutics,152, 388 (1966).Google Scholar
  14. 14.
    T. Otto, H. Eichenbaum, S. I. Wiener, and C. B. Wible, “Learning-related patterns of CAI spike trains parallel stimulation parameters optimal for inducing hippocampal long-term potentiation,” Hippocampus,1, 181 (1991).PubMedCrossRefGoogle Scholar
  15. 15.
    S. N. Pradhan and S. N. Dutta, “Comparative effects of nicotine and amphetamine on timing behavior in rats,” Neuropharmacol.,9, 9 (1970).CrossRefGoogle Scholar
  16. 16.
    W. A. Suzuki, S. Zola-Morgan, L. R. Squire, and D. G. Amaral, “Lesions of perirhinal and parahippocampal cortices in the monkey produce long-lasting memory impairment in the visual and tactile modalities,” J. Neurosci.,13, 2430 (1993).PubMedGoogle Scholar

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© Plenum Publishing Corporation 1998

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  • M. G. Vodolazhskaya

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