Abstract
Cross-correlation analysis was used to observe interhemisphere synchronization of motor cortex neuron activity in anesthetized rats, which was seen on cross-correlograms as peaks located symmetrically relative to the coordinate origin. Peaks included “narrow” peaks (less than 20 msec) and “intermediate” peaks (30–80 msec). The results showed that the “common” source synchronizing the discharges of pairs of neurons located in different hemispheres of the brain might be a neuron (or group of neurons) located in one of the hemispheres and playing this role when there were reciprocal excitatory connections between it and each neuron in a pair. Comparison of the widths of symmetrical peaks with latent periods corresponding to transcallosal connections suggested that mono- and polysynaptic connections underlie the formation of “narrow” and “intermediate” peaks respectively.
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Translated from Rossiiskii Fiziologicheskii Zhurnal imeni I. M. Sechenova, Vol. 84, No. 7, pp. 624–633, July, 1998.
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Sil'kis, I.G., Bogdanova, O.G. The properties and possible mechanisms of interhemisphere synchronization in the motor cortex of the rat. Neurosci Behav Physiol 29, 523–530 (1999). https://doi.org/10.1007/BF02461144
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DOI: https://doi.org/10.1007/BF02461144