REDUCING THE INFLUENCE OF NONTARGET STIMULI ON SACCADE ACCURACY - PREDICTABILITY AND LATENCY EFFECTS
REDUCING THE INFLUENCE OF NONTARGET STIMULI ON SACCADE ACCURACY - PREDICTABILITY AND LATENCY EFFECTS
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DOI：
10.1016/0042-6989(87)90185-4
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发表时间：
1987-01-01
期刊：
影响因子：
1.8
通讯作者：
OREGAN, JK
中科院分区：
文献类型：
--
作者：
COEFFE, C;OREGAN, JK
当眼睛扫视到一组偏心目标时，它往往会落在一个可以粗略描述为配置重心的位置。通过在字母串中使用字母目标，两个实验表明，当促进了“哪里”计算或当扫视触发时刻被充分延迟时，这种“全局效应”，即非目标元素对扫视准确率的影响可以被减弱。论证表明，所观察到的眼跳准确率的提高是一种知觉而不是运动效应，并对可能的潜在机制提出了一些假设。也有人建议，眼睛落在哪里的确切位置可以从两种倾向的线性组合中计算出来：一种是跳向目标目标的倾向，另一种是跳到“吸引凝视的位置”的倾向。更仔细的研究表明，这种凝视吸引位置并不完全位于配置的重心，但比它更不偏心，可能是由于大脑皮层放大系数的权重。
When the eye saccades to a group of eccentric targets, it tends to land in a position which can be loosely described as the center of gravity of the configuration. By using letter targets within strings of letters, it was shown in two experiments that this "global effect", that is, the influence of the non-target elements on saccade accuracy, can be attenuated when the "where" calculation is facilitated or when the moment of saccade triggering is sufficiently delayed. Arguments are given in order to show that the improvement of saccade accuracy observed is a perceptual did not a motor effect and, some hypotheses are then presented for a possible underlying mechanism. It is also suggested that the exact position where the eye lands can be calculated from a linear combination of two tendencies: a tendency to saccade to the aimed-for target, and a tendency to saccade to a "gaze attraction position". Closer consideration showed that this gaze attraction position is not exactly at the center of gravity of the configuration, but less eccentric than it, possibly due to weighting by a cortical magnification factor.