Contributions of binocular and monocular cues to motion-in-depth perception.

Contributions of binocular and monocular cues to motion-in-depth perception.
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双眼和单眼线索对运动深度感知的贡献。

DOI:
10.1167/19.3.2
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发表时间:
2019
期刊:
影响因子:
1.8
通讯作者:
Rosenberg,Ari
Rosenberg,Ari
中科院分区:
医学4区
文献类型:
--
作者:
Thompson,Lowell;Ji,Mohan;Rokers,Bas;Rosenberg,Ari

文献摘要

参考文献

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拦截和避免移动对象需要准确的深度运动(MID)感知。这样的运动可以基于双目和单眼线索来估计。由于之前的研究主要描述了对这些线索的敏感性,它们对中间知觉的相对贡献仍不清楚。在这里,我们使用运动连贯性范式测量了对双眼、单眼和组合线索中间刺激的敏感性。我们首先证实了先前的报道,即双眼中央线索敏感度在整个视野中有很大的变异性。这些刺激在偏心率和速度上是匹配的,这表明这种可变性是有神经基础的。其次,我们发现单眼中线索敏感度在视野中也有很大的不同。这种变化的一个主要成分是几何的:中间刺激在眼睛的视野位置的对侧产生最大的运动信号。当刺激对侧眼而不是同侧眼时,这导致了更好的单眼辨别性能。第三,我们发现单眼线索敏感度普遍超过双眼线索敏感度,并且不依赖于双眼线索敏感度。最后,我们发现对侧单眼线索敏感性对组合线索敏感性有很强的预测作用。这些结果揭示了制约双眼和单眼线索对三维运动知觉贡献的不同因素。
Intercepting and avoiding moving objects requires accurate motion-in-depth (MID) perception. Such motion can be estimated based on both binocular and monocular cues. Because previous studies largely characterized sensitivity to these cues individually, their relative contributions to MID perception remain unclear. Here we measured sensitivity to binocular, monocular, and combined cue MID stimuli using a motion coherence paradigm. We first confirmed prior reports of substantial variability in binocular MID cue sensitivity across the visual field. The stimuli were matched for eccentricity and speed, suggesting that this variability has a neural basis. Second, we determined that monocular MID cue sensitivity also varied considerably across the visual field. A major component of this variability was geometric: An MID stimulus produces the largest motion signals in the eye contralateral to its visual field location. This resulted in better monocular discrimination performance when the contralateral rather than ipsilateral eye was stimulated. Third, we found that monocular cue sensitivity generally exceeded, and was independent of, binocular cue sensitivity. Finally, contralateral monocular cue sensitivity was found to be a strong predictor of combined cue sensitivity. These results reveal distinct factors constraining the contributions of binocular and monocular cues to three-dimensional motion perception.
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