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Conjugation of unit activity in visual and sensorimotor neocortical areas of rabbits during calm wakefulness and pseudoconditioning

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Conclusions

  1. 1.

    The number of pairs of neurons of the visual and sensorimotor regions of the cortex working in correlation in rabbits during calm wakefulness is consistently less (35%) than during pseudoconditioning; during pseudoconditioning, the number of such pairs were the same for a presentation of flashes of light in random order accompanied by electrocutaneous stimulation (49%) or for a presentation of sound accompanied by electrocutaneous stimulation (50%). The constant level of pairs functioning in conjugation during calm wakefulness and pseudoconditioning was maintained for the most part by different pairs of cells at different moments in time.

  2. 2.

    During calm wakfefulness as opposted to a CR, the numbers of cross-correlation histograms with broad central peaks indicating the effect of a common source upon the neurons being recorded was fewer.

  3. 3.

    During calm wakefulness and during pseudoconditioning, the number of pairs with up to 120-msec delays in the discharges of neurons of the visual region after those of the sensorimotor region and up to 120-msec delays in the discharges of the sensorimotor region region after the visual were equal.

  4. 4.

    The data obtained on the delays in discharges of neurons during calm wakefulness and pseudoconditioning indicate that a forestalling of the discharges of the neurons of the visual region by discharges of the sensorimotor region are only characteristic of cases when the given regions are the cortical representations of the conditioned and unconditioned stimuli during a CR.

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Translated from Zhurnal Vysshei Nervnoi Deyatel'nosti imeni I. P. Pavlova, Vol. 37, No. 5, pp. 850–859, September–October, 1987.

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Pavlova, I.V. Conjugation of unit activity in visual and sensorimotor neocortical areas of rabbits during calm wakefulness and pseudoconditioning. Neurosci Behav Physiol 18, 193–201 (1988). https://doi.org/10.1007/BF01149400

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  • DOI: https://doi.org/10.1007/BF01149400

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