回転検査の成績判定に影響を与える因子:コントラバス・コンピューター回転検査システムによる検討

概要

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Trapezoid rotation test (±2,4,6,8, and 10°/sec2,10") using the Contraves'Computerized rotary chair system were repeated for the same subjects (kept their eyes open in the dark) under the various conditions, and each results were compared to investigate the influence of various factors. By this investigation, the follow i n g results were noticeable: 1) A false sign of "labyrinthine preponderance" in the normal subjects was provoked by "only dim illumination" inside of the testing room, and the influence of subjects'lateral gazing eye-position. 2) VOR gain was enhanced slightly by the subjects' voluntary control, and was decreased by non-optimal head position and non-arousal condition of the subject. 3) Frequent calibrations of ENG were available to avoid the fluctuation of the testresult induced by the intraelectrode resistance. 4) The authers' trapezoid. rotation test could show the exact reproducibility of the test-result by taking care of the above mentioned various factors. So-called "response decline phenomenon" was not observed by repeating this test.
耳鼻咽喉科臨床学会の論文