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双眼竞争优势取决于视网膜外运动

Nakayama R, Motoyoshi I, Sato T

期刊名称:Journal of Vision

卷期:2016年第16卷第5期

摘要

双眼竞争中,移动刺激较静止刺激占主导地位。这就是所谓的运动优势。这里的运动通常是指限定于视网膜的运动(视网膜运动)。然而,这种运动可以在几个不同的坐标系来定义。它可相对于背景对象(基于对象的运动),或者相对于观察者的头部或身体(spatiotopic运动),以及视网膜坐标来定义。在这项研究中,我们检测了这三个坐标定义运动的作用。引出离眼成对光栅以建立双眼竞争,其中之一是移动和其他固定运动。一个固定点和一个参考背景随光栅移动或静止,取决于具体情况。三种类型的运动的不同组合由观察者追踪固定点或背景移动的情况下产生。我们发现视网膜运动不一定具有运动优势,并且运动优势由不同坐标系定义的动作组合来决定。

In binocular rivalry, moving stimulus is dominant over stationary stimulus. This is called motion dominance. The motion here is usually a motion defined on the retina (retinal motion). However, motion can be defined in several different coordinates. It can be defined with respect to objects in the background (object-based motion) or to observers' head or body (spatiotopic motion), as well as to the retinal coordinate. In this study, we examined the role of motions defined by these three coordinates. A dichoptic pair of gratings was presented to create a binocular rivalry, one of which was moving and the other stationary. A fixation point and a reference background were either moving with the grating or stationary, depending on the condition. Different combinations of the three types of motions were created by having the observer track the fixation point or the background when they are moving. It was found that the retinal motion does not necessarily yield motion dominance, and that the motion dominance is determined by the combination of motions defined by different coordinate systems.


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