On-line analysis of eye movements using a digital computer.
On-line analysis of eye movements using a digital computer.
复制标题
使用数字计算机在线分析眼球运动。
DOI：
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发表时间：
1980
影响因子：
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通讯作者：
R. Yee
中科院分区：
文献类型：
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作者：
R. Baloh;L. Langhofer;V. Honrubia;R. Yee
本文描述了一个用于眼动记录在线分析的微机系统。患者的定量数据以及与标准数据的统计比较可在测试完成后几秒钟内获得。三种类型的眼球运动进行了分析-自愿扫视，顺利的追求，眼球震颤。前两个是由投射到屏幕上的计算机控制的激光点引起的，第三个是由计算机控制的视动鼓、热量注入和旋转椅引起的。计算机算法对眼睛位置信号进行微分以产生瞬时眼睛速度记录。扫视是根据其特征速度轮廓来识别的。因为追逐和眼球震颤。前两个是由投射到屏幕上的计算机控制的激光点引起的，第三个是由计算机控制的视动鼓、热量注入和旋转椅引起的。计算机算法对眼睛位置信号进行微分以产生瞬时眼睛速度记录。扫视是根据其特征速度轮廓来识别的。对于追踪和眼球震颤，速度记录通过在发生扫视的段之间线性内插来修改。在对数据进行傅立叶分析之后计算增益（输出眼速度/输入眼速度）。
We describe a microcomputer system for on-line analysis of eye movement recordings. Quantitative data from the patient and statistical comparison with normative data is available within seconds of test completion. Three types of eye movements are analyzed--voluntary saccades, smooth pursuit, and nystagmus. The first two are induced by a computer-controlled laser dot projected onto a screen and the third by a computer-controlled optokinetic drum, caloric infusion, and rotatory chair. The computer algorithm differentiates the eye position signal to yield an instantaneous eye velocity record. Saccades are identified based on their characteristic velocity profile. For pursuit and nystagmus. The first two are induced by a computer-controlled laser dot projected onto a screen and the third by a computer-controlled optokinetic drum, caloric infusion, and rotatory chair. The computer algorithm differentiates the eye position signal to yield an instaneous eye velocity record. Saccades are identified based on their characteristic velocity profile. For pursuit and nystagmus, the velocity record is modified by linearly interpolating across segments in which saccades occurred. The gain (output eye velocity/input eye velocity) is calculated after Fourier analysis of the data.