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Horizontal vestibular nystagmus. I. Identification of medial vestibular neurones

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Summary

  1. 1.

    The properties of inputs from the horizontal semi-circular canal to neurones of the medial vestibular nucleus have been studied intracellularly in the unanaesthetized encéphale isolé cat.

  2. 2.

    Secondary neurones of the vestibulo-abducens reflex arc were identified by their orthodromic response to labyrinthine stimulation and by antidromic excitation from the contralateral abducens nucleus.

  3. 3.

    The responses of medial vestibular cells receiving only labyrinthine inputs are also described. These were seen to be predominantly excitatory though IPSPs were observed in a few cases.

  4. 4.

    Identified vestibular neurones were intracellularly injected with procion yellow and showed different morphological characteristics correlated with function.

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French exchange scholar of the Medical Research Council

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Grant, K., Gueritaud, J.P., Horcholle-Bossavit, G. et al. Horizontal vestibular nystagmus. I. Identification of medial vestibular neurones. Exp Brain Res 26, 367–386 (1976). https://doi.org/10.1007/BF00234220

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Key words

  • Medial vestibular neurones
  • Vestibulo-abducens reflex arc