Reynaud Alexandre, Hess Robert F
McGill Vision Research, Department of Ophthalmology, McGill University, Montreal, Canada.
J Vis. 2018 Jan 1;18(1):11. doi: 10.1167/18.1.11.
Stereoscopic vision uses the disparity between the images received by the two eyes to derive three-dimensional estimates. Here, we were interested in providing a measure of the strength of binocular vision alternate to disparity processing. In particular, we wanted to assess the spatial dependence of sensitivity to detect interocular correlation (IOC). Thus we designed dichoptic stimuli composed of bandpass textures whose IOC is sinusoidally modulated at different correlation frequencies and compared sensitivity to these stimuli to that of analogous stimuli modulated in disparity. We observed that the IOC sensitivity is low pass/band pass and increases with stimulus duration and contrast in a similar way to that of disparity sensitivity. IOC sensitivity is only weakly, though significantly, correlated with disparity sensitivity in the population. It could provide an alternate measure of binocular sensitivity.
立体视觉利用两只眼睛接收到的图像之间的视差来得出三维估计。在此，我们感兴趣的是提供一种不同于视差处理的双眼视觉强度测量方法。特别是，我们想要评估检测双眼相关性（IOC）的敏感度的空间依赖性。因此，我们设计了由带通纹理组成的双眼刺激，其IOC以不同的相关频率进行正弦调制，并将对这些刺激的敏感度与视差调制的类似刺激的敏感度进行比较。我们观察到，IOC敏感度是低通/带通的，并且与视差敏感度类似，随着刺激持续时间和对比度的增加而增加。在总体人群中，IOC敏感度与视差敏感度仅存在微弱但显著的相关性。它可以提供一种替代的双眼敏感度测量方法。
