Summary
After bilateral sacculectomies, the squirrel monkey's vertical optokinetic nystagmus showed a gain increase of slow-phase down-nystagmus and a gain decrease of the slow-phase up-nystagmus. The nystagmus beating field of the former shifted upward but that of the latter did not change clearly. These results are in general agreement with the findings in man during the recent shuttle flight and indicate the functional linkage of saccular afferents to the vertical optokinetic nystagmus.
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Baloh RW, Richman L, Yee RD, Honrubia V (1983) The dynamics of vertical eye movements in normal human subjects. Aviat Space Environ Med 54:32–38
Brodal A, Pompeiano O (1957) The vestibular nuclei in the cat. J Anat 91:438–454
Chubb MC, Fuchs AF (1982) Contribution of Y group of vestibular nuclei and dentate nucleus of cerebellum to generation of vertical smooth eye movements. J Neurophysiol 48:75–99
Clement G, Vieville T, Lestienne F, Berthoz A (1986) Modifications of gain asymmetry and beating field of vertical optokinetic nystagmus in microgravity. Neurosci Lett 63:271–274
Gacek RR (1969) The course and central termination of first order neurons supplying vestibular endorgans in the cat. Acta Otolaryngol (Stockh) [Suppl] 254:1–66
Hwang JC, Poon WF (1975) An electrophysiological study of the sacculo-ocular pathways in cats. Jpn J Physiol 25:241–251
Igarashi M (1970) Dysequilibrium after otolithic end organ ablation in squirrel monkeys (saccular ablation). In: Proceedings Barany Society — 1st Extraordinary Meeting, Amsterdam-Utrecht. Congress Bureau, The Hague, The Netherlands, pp 169–177
Igarashi M, Takahashi M, Kubo T, Levy JK, Homick JL (1978) Effect of macular ablation on vertical optokinetic nystagmus in the squirrel monkey. ORL 40:312–318
Matsuo V, Cohen B (1984) Vertical optokinetic nystagmus and vestibular nystagmus in the monkey: up-down asymmetry and effects of gravity. Exp Brain Res 53:197–216
Matsuo V, Cohen B, Raphan T, de Jong V, Henn V (1979) Asymmetric velocity storage for upward and downward nystagmus. Brain Res 176:159–164
Takahashi M, Igarashi M (1977) Comparison of vertical and horizontal optokinetic nystagmus in the squirrel monkey. ORL 39:321–329
Takahashi M, Igarashi M, Homick JL (1977) Effect of otolith end organ ablation on horizontal optokinetic nystagmus and optokinetic after-nystagmus in the squirrel monkey. ORL 39:74–81
Takahashi M, Sakurai S, Kanzaki J (1978) Horizontal and vertical optokinetic nystagmus in man. ORL 40:43–52
Vieville T, Clement G, Lestienne F, Berthoz A (1986) Adaptive modifications of the optokinetic and vestibuloocular reflexes in microgravity. In: Keller EL, Zee DS (eds) Adaptive Processes in visual and oculomotor systems. Pergamon Press, Oxford, pp 111–120
Waespe W, Henn V (1981) Visual-vestibular interaction in the flocculus of the alert monkey. II. Purkinje cell activity. Exp Brain Res 43:349–360
Waespe W, Henn V (1986) The eye velocity signal of floccular Purkinje cells during optokinetic nystagmus and smooth pursuit. In: Keller EL, Zee DS (eds) Adaptive processes in visual and oculomotor systems. Pergamon Press, Oxford, pp 293–300
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Igarashi, M., Himi, T., Kulecz, W.B. et al. The role of saccular afferents in vertical optokinetic nystagmus in primates. A study in relation to optokinetic nystagmus in microgravity. Arch Otorhinolaryngol 244, 143–146 (1987). https://doi.org/10.1007/BF00464258
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DOI: https://doi.org/10.1007/BF00464258