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Changes in excitability of a command neuron in the initial period of conditioning in Helix pomatia

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Conclusions

  1. 1.

    During the procedure of formation of a defensive conditioned reflex of pneumostome closure in a semi-intact preparation ofHelix pomatia the first effector signs of temporary connection formation appear after 25–30 combinations of the conditioned stimulus with reinforcement.

  2. 2.

    The appearance of conditioned motor responses is the result of the appearance of spike responses, initially absent, to the conditioned stimulus in command neurons included in the arc of the unconditioned reflex of pneumostome closure.

  3. 3.

    The main cause of the appearance of conditioned spike responses in command neurons to a previously subthreshold stimulus is increased excitability of the nerve cells.

  4. 4.

    It is postulated that changes in the excitability of the nerve cells themselves play an important role in temporary connection formation, at least in its first stages.

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Authors and Affiliations

  1. Laboratory of Conditioned Reflexes, Institute of Higher Nervous Activity and Neurophysiology, Academy of Sciences of the USSR, Moscow

    E. G. Litvinov & D. B. Logunov

Authors
  1. E. G. Litvinov
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  2. D. B. Logunov
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Translated from Zhurnal Vysshei Nervnoi Deyatel'nosti, Vol. 29, No. 2, pp. 284–294, March–April, 1979.

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Litvinov, E.G., Logunov, D.B. Changes in excitability of a command neuron in the initial period of conditioning in Helix pomatia. Neurosci Behav Physiol 10, 539–547 (1980). https://doi.org/10.1007/BF01195528

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  • DOI: https://doi.org/10.1007/BF01195528

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