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Dynamics of visual cortical and hippocampal electrical activity during prolonged immobilization

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Conclusions

  1. 1.

    In rats exposed to acute hypokinetic stress the background EEG of the visual cortex and hippocampus shows increased energy power predominantly of frequencies in the theta-band, the level of synchronization in the response to light is lowered, and partial interchange of individual rhythms is observed.

  2. 2.

    The more superficial phases of sleep predominate in the experimental animals and the duration of individual phases is shortened on account of lateness in falling asleep and frequent awakenings.

  3. 3.

    Together with changes in the quantitative characteristics of sleep, a change in its quality is observed in animals exposed to stress: Phases of sleep are in some cases incomplete, dissociation is observed between muscle tone, heart rate, and the electrographic picture of sleep (the paradoxical phase).

  4. 4.

    The severity of these disorders depended on individual differences between the higher nervous activity of the animals.

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Authors and Affiliations

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

    I. A. Kolomeitseva

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  1. I. A. Kolomeitseva
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Translated from Zhurnal Vysshei Nervnoi Deyatel'nosti, Vol. 29, No. 2, pp. 337–344, March–April, 1979.

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Kolomeitseva, I.A. Dynamics of visual cortical and hippocampal electrical activity during prolonged immobilization. Neurosci Behav Physiol 11, 62–68 (1981). https://doi.org/10.1007/BF01349674

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  • DOI: https://doi.org/10.1007/BF01349674

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