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This is a treatise on the methods of testing the organ of hearing, including its functions of hearing and equilibration. In addition, sufficient attention is given to the physiology to render plain the results of comparatively recent investigations which make possible some new and important tests. The hearing tests are classified into those which test the condition of the sound-conduction apparatus and those testing the condition of the sound-perceiving apparatus. The methods of using speech, noises and tones as hearing tests are given in detail and the value of each is indicated. The particular value of this work is in the discussion of the physiology of the vestibular apparatus and the methods of testing the function of these end-organs. The subject of nystagmus is carefully considered, dealing with both spontaneous and experimental nystagmus. The methods of using caloric, pressure, galvanic and turning tests are fully and lucidly explained, and finally
Anleitung Zur Funktionsprüfung des Ohres (Prüfung des Gehör- und Gleichgewichtsapparates).. JAMA. 1913;60(17):1323. doi:10.1001/jama.1913.04340170051037