The effect of interocular phase difference on perceived contrast.
The effect of interocular phase difference on perceived contrast.
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DOI：
10.1371/journal.pone.0034696
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Meese TS
中科院分区：
文献类型：
--
作者：
Baker DH;Wallis SA;Georgeson MA;Meese TS
双眼视觉传统上被视为两个过程：相似图像的融合和不同图像的眼间抑制（例如双眼竞争）。最近的工作表明，眼间抑制是相位不敏感的，而双眼求和仅在刺激同相时发生。但这些过程如何影响我们对双眼对比度的感知呢？我们使用匹配范式测量了各种眼间相位偏移 (0–180°) 和匹配对比度 (2–32%) 的感知对比度。我们的结果揭示了对比度和眼间相位之间复杂的相互作用。在低对比度下，感知对比度随着相位偏移的增加而单调降低，最高可达 1.6 倍。在较高对比度下，图案是非单调的：感知对比度对于同相和反相条件以及单眼呈现来说是真实的，但在中间相位角时略有增加。这些发现挑战了最近的模型，其中对比度感知是相位不变的。结果是通过双目对比度增益控制模型预测的。该模型涉及单眼增益控制以及来自正相位通道和负相位通道的眼间抑制，然后是跨眼睛求和，然后跨空间求和。重要的是，该模型适用于具有垂直视差的条件，仅具有单个（零）视差通道，并且在单个框架内体现了融合和抑制过程。
Binocular vision is traditionally treated as two processes: the fusion of similar images, and the interocular suppression of dissimilar images (e.g. binocular rivalry). Recent work has demonstrated that interocular suppression is phase-insensitive, whereas binocular summation occurs only when stimuli are in phase. But how do these processes affect our perception of binocular contrast? We measured perceived contrast using a matching paradigm for a wide range of interocular phase offsets (0–180°) and matching contrasts (2–32%). Our results revealed a complex interaction between contrast and interocular phase. At low contrasts, perceived contrast reduced monotonically with increasing phase offset, by up to a factor of 1.6. At higher contrasts the pattern was non-monotonic: perceived contrast was veridical for in-phase and antiphase conditions, and monocular presentation, but increased a little at intermediate phase angles. These findings challenge a recent model in which contrast perception is phase-invariant. The results were predicted by a binocular contrast gain control model. The model involves monocular gain controls with interocular suppression from positive and negative phase channels, followed by summation across eyes and then across space. Importantly, this model—applied to conditions with vertical disparity—has only a single (zero) disparity channel and embodies both fusion and suppression processes within a single framework.
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影响因子：
1.8
作者：
Meese TS;Summers RJ
通讯作者：
Summers RJ
影响因子：
3.7
作者：
Sengpiel, Frank;Jirmann, Kay-Uwe;Eysel, Ulf T.
通讯作者：
Eysel, Ulf T.
双目视觉中的对比度和相位组合
影响因子：
3.7
作者：
Huang CB;Zhou J;Zhou Y;Lu ZL
通讯作者：
Lu ZL
DOI：
10.1073/pnas.0509629103
发表时间：
2006-01-24
影响因子：
11.1
作者：
Ding, J;Sperling, G
通讯作者：
Sperling, G
影响因子：
2.5
作者：
Smith, EL;Chino, YM;Crawford, MLJ
通讯作者：
Crawford, MLJ