自発眼球運動,視性運動性および前庭性眼振における眼球偏位速度とくに急速相速度に関する研究

スポンサーリンク

概要

• 論文の詳細を見る

• The eye-speed during the quick phase of nystagmus appears to be of diagnostic importance for neurotological examination. The author measured the eye-speed of optokinetic and vestibular nystagmus as well as the eye-speed during voluntary saccadic eye movements. The experimental results obtained are as follows: 1) The eye-speed during voluntary saccadic eye movements was faster when the excursion of the eyes was larger.The maximum of mean values of saccadic eye movements was as fast as 502°/sec with the standard deviation of 61°/sec. 2) The slow phase eye-speed showed much smaller variation in either of optokinetic and vestibular nystagmus. The maximum slow phase eye-speed was around 100°/sec for post rotatory nystagmus when the stimulus was applied by suddenly stopping the rotatory chair at 180°/sec and was around 40°/sec for caloric nystagmus when the stimulus was applied with 20cc of ice water irrigated for 10sec. 3) The quick phase eye-speed of optokineticnystagmus induced by optokinetic stimulus of 58, 4°/ sec was 321°/sec with the standard deviation of 61°/sec. The quick phase eye-speed of vestibular nystagmus induced by rotatory and caloric stimulation was 152°/sec with the standard deviation of 290°/ sec.The quick phase eye-speed remained constant, though with a considerable variation, that was different from the slow phase eye-speed which changes in the course of stimulation.The quick phase eye-speed, however, appeared to have some dependence on the magnitude of eye excursion during the quick phase of nystagmus.

• 社団法人 日本耳鼻咽喉科学会の論文

著者

• 上田 良穂

  東京大学医学部耳鼻咽喉科学教室

関連論文

• 自発眼球運動,視性運動性および前庭性眼振における眼球偏位速度とくに急速相速度に関する研究
• 視標追跡検査(Eye-Tracking Test)迷路,小脳,脳幹障害例について
• 卵形嚢および半規管神経の各単独刺激による外眼筋収縮の時間的特徴
• 身体•眼球の平衡と脳幹•小脳迷路の機能

スポンサーリンク