Eye movements evoked by microstimulation of dorsal cap of inferior olive in the rabbit

N. H. Barmack, D. T. Hess

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Microstimulation was used in an attempt to activate selectively neurons of the dorsal cap of the inferior olive in unanesthetized rabbits, and the eye movements evoked by this microstimulation were recorded. Trains of microstimulation (20-50 μA, 0.1- to 0.2-ms pulses, 10-60 pulses/s, 2-8 s duration) evoked low-velocity conjugate eye movements directed toward the side of the stimulated olive. These evoked eye movements were interrupted by resetting eye movements in the opposite direction and could be evoked only if the rabbit was in darkness. The velocity of the evoked eye movements increased during a stimulus train and gradually decreased after the stimulation was terminated. The low-velocity eye movements appeared to combine with eye movements evoked by vestibular stimulation without any significant interaction. After transection of the olivocerebellar pathway or destruction of the contralateral cerebellar flocculus, dorsal cap microstimulation no longer evoked ipsilaterally directed eye movements.

Original languageEnglish (US)
Pages (from-to)165-181
Number of pages17
JournalJournal of Neurophysiology
Volume43
Issue number1
StatePublished - 1980

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Eye Movements
Rabbits
Darkness
Olea
Neurons

ASJC Scopus subject areas

  • Physiology
  • Neuroscience(all)

Cite this

Eye movements evoked by microstimulation of dorsal cap of inferior olive in the rabbit. / Barmack, N. H.; Hess, D. T.

In: Journal of Neurophysiology, Vol. 43, No. 1, 1980, p. 165-181.

Research output: Contribution to journalArticle

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