Velocity characteristics of smooth pursuit eye movements to different patterns of target motion
Velocity characteristics of smooth pursuit eye movements to different patterns of target motion
复制标题
不同目标运动模式平滑追踪眼动的速度特性
DOI：
10.1007/bf00236858
复制
发表时间：
2004
影响因子：
2
通讯作者：
R. Schmid
中科院分区：
文献类型：
--
作者：
A. Buizza;R. Schmid
摘要水平平滑追踪眼球运动记录在正常受试者响应于不同模式的目标运动，无论是周期性的或不。周期图案为三角波和正弦波。非周期性模式是具有恒定或正弦变化速度的斜坡。在这两种情况下，考虑了几种不同的振幅和峰值速度。实验结果表明：（a）平滑跟踪系统的性能取决于目标运动的时空特性;（B）在匀速斜坡跟踪过程中，平滑跟踪眼速度与目标速度之间存在强非线性关系，并随目标漂移幅度的增大而饱和;（c）在其余实验条件下，在增益约为0.9的情况下，直到75度/秒的目标速度存在线性行为。
SummaryHorizontal smooth pursuit eye movements were recorded in normal subjects in response to different patterns of target motion that was either periodic or not. Periodic patterns were triangular and sinusoidal waves. Non-periodic patterns were ramps with either constant or sinusoidally varying velocity. In both cases, several different amplitudes and peak velocities were considered. The experimental results indicate that (a) the performance of the smooth pursuit system depends on the spatio-temporal characteristics of target motion, (b) the relationship between smooth pursuit eye velocity and target velocity during the tracking of constant velocity ramps is strongly nonlinear with a saturation depending on the amplitude of target excursion, (c) in the remaining experimental conditions, there is a linear behaviour up to target velocities of 75 deg/s with a gain of about 0.9.