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October 24, 1936

The Relationship of Eye Muscles to Semicircular Canal Currents in Rotationally Induced Nystagmus

JAMA. 1936;107(17):1413. doi:10.1001/jama.1936.02770430063041

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This little work contains results of research over a considerable period of years and embodies a number of papers previously published in various journals and in one book on neurology. After an introduction in which the original work of Ewald is discussed and the views of Ruttin, Lemere and Quix are given, the author discusses the assignment of eye muscles to canal currents. The recognized types of nystagmus induced by rotation are presented in a table. Furthermore, there is a table showing the theoretically possible types of nystagmus produced by rotation. The author states that the "total number of possible currents or combinations of currents in one labyrinth is twenty-six. Fourteen current pictures account for the known types of induced nystagmus. Twenty-six current pictures remain. Calculations were made as to how to produce these by rotation and what eye movements would result. Experiments with one normal man show the results

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