Pelisson D, Prablanc C
Laboratoire de Neuropsychologie Expérimentale INSERM U94, Bron, France.
Vision Res. 1988;28(1):87-94.
The kinematics of centrifugal and centripetal saccadic eye movements were quantified in human subjects. The maximum velocity of centripetal saccades increased with the eccentricity of the orbital starting point and was systematically higher than that of centrifugal saccades starting from primary orbital position. The slope of this linear increase was related to target step amplitude (2.6 and 3.9 deg/sec/deg for 20 and 30 deg, respectively). Despite these velocity changes, saccade amplitude was maintained by corresponding variations of the duration of deceleration. These findings, which are relevant with respect to saccadic control theories, indicate that initial eye position must be considered before comparing saccades based on their kinematic properties.
对人类受试者的离心和向心扫视眼动的运动学进行了量化。向心扫视的最大速度随着眼眶起始点的偏心率增加，并且系统地高于从初始眼眶位置开始的离心扫视的最大速度。这种线性增加的斜率与目标步幅有关（20度和30度时分别为2.6度/秒/度和3.9度/秒/度）。尽管有这些速度变化，但通过减速持续时间的相应变化来维持扫视幅度。这些与扫视控制理论相关的发现表明，在根据扫视的运动学特性比较扫视之前，必须考虑初始眼位。
