Abstract
Transcallosal evoked potentials arising in the partietal region in response to stimulation of the auditory cortex of the opposite hemisphere were investigated in acute experiments on cats immobilized by tubocurarine. Interzonal transcallosal responses were recorded over the whole surface of the parietal cortex and were of two types: positive-negative and negative-positive. Positive-negative EP have a longer response latency and a greater total amplitude of both components. Negative-positive EP disappeared after division of the corpus callosum, whereas positive-negative responses were not significantly changed. Interzonal transcallosal potentials were characterized by the presence of functional interhemispheric asymmetry of individual shape. The right hemisphere was dominant with respect to average amplitude of the negative phase in negative-positive responses. The amplitude of the early positive component was greater in the right hemisphere in males and in the left hemisphere in females. The late negative wave in animals of both sexes was greater in the right hemisphere. Late components of the EP had a significantly shorter peak latency in the dominant hemisphere.
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V. P. Babmindra, G. A. Tolchenova, and N. I. Shevchenko, “Association connections of the parietal cortex of the cat brain (area 7),” Neirofiziologiya,12, No. 1, 13 (1980).
V. L. Bianki, Asymmetry of the Animal Brain [in Russian], Nauka, Leningrad (1985).
V. L. Bianki, G. T. Bozhko, and A. F. Slepchenko, “Interhemispheric asymmetry of transcallosal responses of the cat auditory cortex,” Fiziol. Zh. SSSR,73, No. 7, 851 (1987).
V. L. Bianki, G. T. Bozhko, and V. A. Shramm, “Comparative characteristics of inter-hemispheric asymmetry of transcallosal responses of the projection and association regions of the cat cortex,” Fiziol. Zh. SSSR,72, No. 3, 280 (1986).
V. L. Bianki, I. A. Makarova, and V. A. Kurochkin, “Interhemispheric asymmetry of associative responses in the cat parietal cortex,” Fiziol. Zh. SSSR,68, No. 6, 729 (1982).
A. S. Iontov, V. A. Otellin, É. É. Granstrem, and F. N. Makarov, “Visual and auditory commissural projections in the cat,” in: Outlines of Morphology of Connections of the Central Nervous System [in Russian], Nauka, Leningrad (1972), pp. 69–84.
S. P. Narikashvili, “The association region of the cerebral cortex and its interaction with sensory areas,” Zh. Vyssh. Nerv. Deyat.,19, No. 1, 110 (1969).
V. A. Otellin and V. I. Meškenaite, “Initial neurons of associative and callosal pathways of the lateral and suprasylvian region of the cat brain,” Arkh. Anat. Gistol. Émbriol.,87, No. 9, 14 (1984).
A. G. Polyakova, “Characteristics of thalamocortical afferentiation forming early and late components of the associative response in the cat parietal cortex,” in: Proceedings of a Symposium on Evolution of the Parietal Lobes of the Brain [in Russian], Leningrad University Press, Leningrad (1971), pp. 44–47.
A. G. Polyakova, Functional Organization of the Association Cortex of the Brain [in Russian], Nauka, Moscow (1977).
O. P. Tairov, “Topography of the associative responses in the cat parietal cortex,” Vestn. Leningrad. Gos. Univ., No. 15, 80 (1970).
R. Hassler and K. Muhs-Clement, “Architektonischen Cortex der Katze,” Z. Hirnforsch.,6, 377 (1964).
J. F. Kalaska, H. R. Caminiti, and A. P. Georogoulos, “Cortical mechanisms related to the directions of the two dimensional arm movements: relations in parietal area 5 and comparison with motor cortex,” Exp. Brain Res.,51, No. 2, 247 (1983).
K. Kawamura, “Cortico-cortical fiber connections of the cat cerebrum. II. The parietal region,” Brain Res.,51, 23 (1973).
C. N. Woolsly, “Organization of the auditory cortex,” in: Theory of Communication in Sensory Systems, Mir, Moscow (1964), pp. 251–270.
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Translated from Fiziologicheskii Zhurnal SSSR imeni I. M. Sechenova, Vol. 74, No. 4, pp. 457–465, April, 1988.
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Shramm, V.A., Kharitonov, E.V. Interzonal transcallosal connections of the auditory and parietal cortex. Neurosci Behav Physiol 19, 156–163 (1989). https://doi.org/10.1007/BF01190462
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DOI: https://doi.org/10.1007/BF01190462