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Experimental Brain Research

, Volume 37, Issue 1, pp 1–15 | Cite as

Interaction between the horizontal vestibulo-ocular reflex and optokinetic response in rabbits

  • C. Batini
  • M. Ito
  • R. T. Kado
  • P. J. Jastreboff
  • Y. Miyashita
Original Articles

Summary

Dynamic characteristics of the horizontal vestibulo-ocular reflex (HVOR), the optokinetic response (OKR), and their interactions were investigated in alert albino rabbits. For stimulation of the horizontal semicircular canals, the whole rabbit was rotated sinusoidally on a motor-driven turntable at peak-to-peak amplitudes of 5 ° to 30 ° over a frequency range of 1/30 to 1/2 Hz. Optokinetic stimulation was provided by a narrow vertical slit light source presented in front of the eye to be tested. The evoked horizontal eye movements were observed and measured by means of a closed circuit television system adapted to provide an analog signal proportional to the eye movement. The net HVOR was obtained by rotation of the turntable in darkness and the net OKR by rotation of the light source. Combining rotation of the turntable with a stationary light source immediately increased the gain and reduced the phase shift of the HVOR. The light source moving in phase with the turntable, but at twice the angular amplitude, reduced the gain and advanced the phase of the HVOR. Eye movement curves of the HVOR modified by a fixed or moving slit light could be reconstructed approximately by a linear combination of the net HVOR and OKR.

Key words

Vestibular Ocular Optokinetic Rabbit 

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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • C. Batini
    • 1
  • M. Ito
    • 1
  • R. T. Kado
    • 1
  • P. J. Jastreboff
    • 1
  • Y. Miyashita
    • 1
  1. 1.Department of Physiology, Faculty of MedicineUniversity of TokyoTokyoJapan

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