Matsushima J, Harada C, Kumagai M, Suganuma T, Ifukube T, Takahashi M, Tanaka K
Department of Otolaryngology, Hokkaido University, Sapporo, Japan.
Auris Nasus Larynx. 1992;19(3):153-60. doi: 10.1016/s0385-8146(12)80035-6.
A new system for recording eye movements using a charge-coupled device (CCD) imagesensor in a video camera, in which less than 0.5 degree of horizontal and vertical eye movements can be recorded, was applied in 7 subjects. Eye movements were recorded while they stepped in place. We observed 5 normal subjects, a patient with horizontal and vertical oscillopsia during walking, and one with a chronic limp. In the normal adults, the amplitude of vertical eye movement was less than 0.5 degree, and the horizontal eye movement was less than 2 degrees. The mean amplitude of horizontal and vertical eye movements in the subject who limped was larger than that of normal subjects. The patient who complained of vertical oscillopsia during walking showed the largest amplitude of vertical eye movement among any subject tested. The vertical oscillopsia in the patient was due to the largest amplitude of vertical eye movement. This system for recording eye movements will be useful in analyzing the mechanism of gaze fixation during walking.
一种使用摄像机中的电荷耦合器件（CCD）图像传感器记录眼球运动的新系统被应用于7名受试者，该系统能够记录小于0.5度的水平和垂直眼球运动。受试者原地踏步时记录其眼球运动。我们观察了5名正常受试者、一名行走时伴有水平和垂直视振荡的患者以及一名慢性跛行患者。在正常成年人中，垂直眼球运动的幅度小于0.5度，水平眼球运动小于2度。跛行受试者的水平和垂直眼球运动平均幅度大于正常受试者。行走时主诉垂直视振荡的患者在所有测试受试者中垂直眼球运动幅度最大。该患者的垂直视振荡是由于垂直眼球运动幅度最大所致。这种记录眼球运动的系统将有助于分析行走过程中注视固定的机制。
