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Characteristics of compensatory processes after unilateral transection of the brachia of the inferior colliculus in cats

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Conclusions

  1. 1.

    Unilateral injury to the brachium of the inferior colliculus resulted in a disturbance of the adequate perception of space, which was indicated by the unidirectionality of orientational and conditioned-reflex responses (in the same direction as the side of injury) to stimuli of various sensory modalities.

  2. 2.

    Appreciable deafferentation of the parietal neocortex on the transection side resulted in a behavioral deficit.

  3. 3.

    Compensation for the function of spatial analysis of nonauditory signals probably occurred due to the restoration of functional (tonusogenic) symmetry between the cortical and subcortical representations of nonauditory-signal analyzers.

  4. 4.

    The restoration of the spatial analysis of auditory stimuli occurred during the first stages of compensation due to the activation of unihemispheric mechanisms in the intact parietal cortex. Later, the parietal cortex on the transection side was involved in this process.

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Authors and Affiliations

  1. Department of Physiology and Laboratory of Neurophysiology, Medical Institute, Gorky

    Zh. A. Belousova, O. A. Goreva & V. I. Shcherbakov

Authors
  1. Zh. A. Belousova
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  2. O. A. Goreva
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  3. V. I. Shcherbakov
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Additional information

Translated from Zhurnal Vysshei Nervnol Deyatel'nostl imeni I. P. Pavlova, Vol. 32, No. 5, pp. 858–866, September–October, 1983.

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Belousova, Z.A., Goreva, O.A. & Shcherbakov, V.I. Characteristics of compensatory processes after unilateral transection of the brachia of the inferior colliculus in cats. Neurosci Behav Physiol 14, 133–139 (1984). https://doi.org/10.1007/BF01185220

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  • DOI: https://doi.org/10.1007/BF01185220

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