眼球運動を指標とした傾斜刺激による動揺病の研究
スポンサーリンク
概要
- 論文の詳細を見る
The objective of this investigation was to assess the relationship among the otolithic organs, i. e. utricles and saccules, and motion sickness. For this, I used a lateral tilting chair apparatus designed to provide a linear acceleration stimuli to the otolithic organs of humans. A question and answer survey was made with regard to motion sickness and vestibular disorders. Included were benign paroxysmal positional vertigo (BPPV)(33), sudden deafness (38) and Meniere's disease (29). For the controls, 130 healthy persons were studied. The extent of motion sickness in those with BPPV, those with other vestibular disorders and the healthy persons revealed definite differences. ENG recordings of horizontal nystagmoid eye movements induced by lateral tilting, were made in 130 healthy persons and in 90 or more subjects peripheral vestibular disorders. Four types of the eye movement patterns were identified. Type 1: Fixed direction type-Fixed directional nystagmoid eye movemetns were induced by tilting to either side. Type 2: Changed direction type-Rightward nystagmoid eye movements were induced by left lateral tilting and leftward movements by right lateral tilting. Type 3: Combination type-Nystagmoid eye movements were induced by lateral tilting but the direction was uncertain i. e. except for Types 1 and 2. Type 4: Nystagmoid eye movements were not apparent. In the healthy individuals, those who readily experienced had a changed direction type (Type 2). On the other hand, among the groups with peripheral vestibular disorders, 70% of BPPV patients showed a changed direction type (Type 2). This was rarely seen in the others. This study led to the conclusion that persons who readily experienced motion sickness had definite reactions to a BPPV, and that such depend on the susceptibility of the otolithic organs.
- 耳鼻と臨床会の論文