メニエ-ル病患者の頭部動揺におよぼす視運動刺激の影響 (メニエ-ル病の研究-6-<特集>)

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The effects of horizontal and vertical optokinetic stimulation on the head movement in patients with Ménière's disease were investigated using an optokinetic stimulator of Jung's type, a cephalographic system with an industrial television and a minicomputer.The following results were obtained.1. Three types of the locus patterns traced by the head movement were obtained during optokinetic stimulation. The centripetal type was observed in 8 subjects, the left and right type in 5 and the forward and backward type in 7. All of the patients with bilateral Ménière's disease showed the forward and backward type.2. The total length of the locus during one minute of standing gradually increased up to 30 to 90deg/sec of stimulus speed and then decreased. However, there were some exceptional cases which showed irregular courses of going up and down in the locus length.3. In the ratio of the anteroposterior component to the lateral component of the locus, most of the tested subjects showed minimum values during horizontal stimulation and maximum values during vertical stimulation.4. There were several kinds of time courses in the head position during optokinetic stimulation.5. The frequency spectra and the averaged divisional frequencies were obtained and some characteristic results were shown depending upon the types of the locus.
耳鼻咽喉科臨床学会の論文