Summary
Turning a rabbit on a turn-table for a few degrees induces compensatory eye-movements and results in an asymmetry of tonus in the optomotor system. If the visual input is discontinued (darkness), this asymmetry decays and the eyes drift back to the mid-position within 12–18 sec. The equalization of such asymmetries of tonus under normal conditions and under curare is described. Tonus asymmetries induced by tilting the animals about the longitudinal axis are neither compensated under visual, nor under non-visual, conditions. Recordings were taken from oculomotor neurons, and changes of their firing frequencies were used as a measure for eye movements.
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References
Cohen, B., Goto, K., Tokumasu, K.: Return eye movements; an ocular compensatory reflex in the alert cat and monkey. Exp. Neurol. 17, 172–185 (1967).
Collewijn, H.: Optokinetic eye movements in the rabbit: input-output relations. Vision Res. 9, 117–132 (1969).
—: The normal range of horizontal eye movements in the rabbit. Exp. Neurol. 28, 132–143 (1970).
Cornsweet, T.N.: Determination of the stimuli for involuntary drifts and saccadic eye movements. J. opt. Soc. Amer. 46, 987–993 (1956).
Dichgans, J., Brandt, T.: Visual-vestibular interaction and motion perception. In: Cerebral control of eye movements and motion perception, pp. 327–338. Ed.by Dichgans and Bizzi. Basel: Karger 1972.
— Schmidt, C.L., Wist, E.R.: Frequency modulation of afferent and efferent unit activity in the vestibular nerve by oculomotor impulses. In: Basic aspects of central vestibular mechanism, pp. 449–456. Ed. by Brodal and Pompeiano. Amsterdam: Elsevier 1972.
— Wist, E.R., Schmidt, C.L.: Modulation neuronaler Spontanaktivität im N. vestibularis durch optomotorische Impulse beim Kaninchen. Pflügers Arch. 319, R. 154 (1970).
Horridge, G.A.: Optokinetic memory in the crab, Carcinus. J. exp. Biol. 44, 233–245 (1966).
Klinke, R., Schmidt, C.L.: Efferent influence on the vestibular organ during active movements of the body. Pflügers Arch. 318, 325–332 (1970).
Koerner, F., Dichgans, J.: Bewegungswahrnehmung, optokinetischer Nystagmus und retinale Bildwanderung. Arch. klin. exp. Ophthal. (Graefe). 174, 34–48 (1967).
— Schiller, P.H.: The optokinetic response under open and closed loop conditions in the monkey. Exp. Brain Res. 14, 318–330 (1972).
Luschei, E.S., Fuchs, A.F.: Activity of brain stem neurons during eye movements of alert monkeys. J. Neurophysiol. 35, 445–461 (1972).
Ratliff, F., Riggs, L.A.: Involuntary motions of the eye during monocular fixation. J. exp. Psychol. 40, 687–701 (1950).
Robinson, D.A.: Oculomotor unit behavior in the monkey. J. Neurophysiol. 33, 393–404 (1970).
—: On the nature of visual-oculomotor connections. Invest. Ophthal. 11, 497–503 (1972).
Schaefer, K.-P.: Die Erregungsmuster einzelner Neurone des Abdueens-Kernes beim Kaninchen. Pflügers Arch. 284, 31–52 (1965).
Schaefer, K.-P. Schott, D., Schulze, K.: Proprioceptive control of eye movements ? Single unit study in rabbit oculomotor nuclei. (In preparation).
Schiller, P.H.: The discharge characteristics of single units in the oculomotor and abducens nuclei of the unanaesthetized monkey. Exp. Brain Res. 10, 347–362 (1970).
St. Cyr, G.J., Fender, D.H.: The interpaly of drifts and flicks in binocular fixation. Vision Res. 9, 245–265 (1969).
Ter Braak, J.W.G.: Untersuchungen über optokinetischen Nystagmus. Arch. néerl. Physiol. 21, 309–376 (1936).
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A preliminary report was given at the spring meeting of the “German Physiological Society” 1973.
Supported by the “Deutsche Forschungsgemeinschaft”, SFB 33.
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Meyer, D.L., Bonnemann, D. & Schaefer, K.P. Equalization of asymmetries of tonus in the optomotor system of rabbits. Exp Brain Res 18, 505–511 (1973). https://doi.org/10.1007/BF00234134
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DOI: https://doi.org/10.1007/BF00234134