PERCEPTUAL CONSEQUENCES OF OCULAR LENS OVERSHOOT DURING SACCADIC EYE-MOVEMENTS
PERCEPTUAL CONSEQUENCES OF OCULAR LENS OVERSHOOT DURING SACCADIC EYE-MOVEMENTS
复制标题
DOI：
10.1016/0042-6989(95)00042-x
复制
发表时间：
1995-10-01
期刊：
影响因子：
1.8
通讯作者：
BRIDGEMAN, B
中科院分区：
文献类型：
--
作者：
DEUBEL, H;BRIDGEMAN, B
在以前的论文中，我们比较了眼球地球仪记录的扫视眼球运动（记录与巩膜眼线圈）与透镜反射记录相同的眼球运动（记录与双浦肯野图像眼动仪），我们发现了相当大的动态之间的偏差的证据，在扫视期间和之后立即。我们将这些偏差归因于眼睛的透镜相对于眼睛的光轴的运动。本文量化的预测心理物理效应的透镜位移扫视期间和之后。两个小目标，一个在另一个上面，在完全黑暗中闪烁2毫秒，底部的一个正好在扫视结束时，顶部的一个30毫秒后。第一个目标相对于另一个目标出现水平偏离，方向与眼跳相反。对于每度扫视眼球运动，相对误定位的幅度可以高达0.03度。结果表明，视网膜上视觉图像的位置受到地球仪位置和透镜与其正常位置的偏差的影响。
In a previous paper we compared eye globe records of saccadic eye movements (recorded with a scleral eye coil) with lens reflection records of the same eye movements (recorded with a dual-Purkinje-image eyetracker); we found evidence for considerable dynamic deviations between the two during and immediately after saccades. We ascribed these deviations to the movements of the eye's lens relative to the optical axis of the eye. This paper quantifies a predicted psychophysical effect of lens displacements during and after saccades. Two small targets, one above the other, were flashed for 2 msec in total darkness, the bottom one exactly at the end of the saccade, the top one 30 msec later. The first target appears deviated horizontally relative to the other, in a direction opposite to the saccade. Magnitude of the relative mislocalization can be up to 0.03 deg for each degree of saccadic eye movement. The result shows that the position of the visual image on the retina is affected both by position of the globe and by deviations of the lens from its normal location.