Percy Fridenberg, M.D.
JAMA. 1917;LXVIII(18):1337-1338. doi:10.1001/jama.1917.04270050039020.
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To the Editor:  —Recent work on the internal ear has been summed up in an exceedingly instructive and succinct article by I. A. Jones (The Practical Uses of Recent Work on the Internal Ear, The Journal, March 17, 1917, p. 829). He notes that the attention of the eye specialist has not been called to the intimate relation between the eye and the ear, and mentions a well known ophthalmologist who, having had the elicitation of nystagmus by Politzer inflation demonstrated to him, obviously for the first time, by an otologist, expressed his astonishment that there was such a close relation between the ear and the eye. In the same article stress is laid on the vestibular apparatus, meaning the static portions of the internal ear, and the pathways from the ear through the brain-stem, cerebellum and cerebrum, as the usual if not exclusive source of vertigo. The author deprecates


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