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Convergence and interaction of reticulofugal and peripheral afferent impulses on caudate neurons in the cat

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Abstract

Extracellular investigations on the activity of 269 caudate neurons during electrical stimulation of the midbrain reticular formation were carried out during chronic experiments on cats. Stimuli of different sensory modalities were used: auditory, mechanical, and visual. A response was observed to both reticular and peripheral stimulation in single neurons. The former produced an orthodromic response in 53% of caudate neurons, notable for its high probability of occurrence. A total of 23% of caudal neurons responded to this type of stimulation and application of stimuli of a single modality, while 14% responded polymodally. An excitatory response pattern prevailed during all types of stimulation. By applying twin stimuli to 100 caudate neurons, a capacity for interaction between reticular and acoustic inputs was discovered. Interaction was similarly observed in neurons which had reacted neither to separate application of both stimuli nor to either of the stimuli in isolation.

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Authors
  1. A. N. Litvinova
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  2. V. G. Verba
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Additional information

A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziologiya, Vol. 19, No. 1, pp. 101–110, January–February, 1987.

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Litvinova, A.N., Verba, V.G. Convergence and interaction of reticulofugal and peripheral afferent impulses on caudate neurons in the cat. Neurophysiology 19, 87–94 (1987). https://doi.org/10.1007/BF01056001

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  • DOI: https://doi.org/10.1007/BF01056001

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