Symmetry of generalized rivalry network models determines patterns of interocular grouping in four-location binocular rivalry
Symmetry of generalized rivalry network models determines patterns of interocular grouping in four-location binocular rivalry
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DOI：
10.1152/jn.00438.2019
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发表时间：
2019-11-01
影响因子：
2.5
通讯作者：
Lu, Zhong-Lin
中科院分区：
文献类型：
--
作者：
Golubitsky, Martin;Zhao, Yukai;Lu, Zhong-Lin
以前，对称性的网络模型已被提出来解释双眼竞争过程中的双眼间分组。在这里，我们构建并分析具有不同类型对称性（基于不同类型的兴奋性耦合）的广义竞争网络模型，以在具有四个视网膜位置的12个实验中推导出可能的感知状态的预测。由于在多个位置同时报告感知的困难，涉及三个以上的位置在双目竞争的感知没有经验研究。这里.我们开发了一种新颖的报告程序，其中当受试者被提示报告所有四个视网膜位置中同时感知的颜色时，刺激消失。这个过程确保同时而不是顺序感知报告。该程序被应用在12个实验与6个双目竞争刺激配置。全部由在四个位置的红色和绿色正方形的二视显示组成。我们把红色方块的个数为偶数或奇数的组态分别称为偶数组态或奇数组态。在使用偶刺激配置的实验中，我们发现，偶感知比奇感知更频繁地观察到，而在使用奇刺激配置的实验中，偶和奇感知的观察概率相等。广义竞争网络模型中的耦合依赖于刺激的功能和空间配置是更好地符合实证结果。结果表明，水平和垂直方向上的兴奋性耦合强度不同，同一颜色之间和不同颜色之间的兴奋性耦合强度也不同，通过考虑等耦合强度的特征，建立了两眼竞争过程中两眼间的新的Wilson网络模型。基于相等耦合的网络对称性预测感知。对于四个位置的竞争实验，在每个位置的红色或绿色广场，我们分析了不同的可能的威尔逊网络。在我们的实验中，我们开发了一种新的报告程序，并表明，网络中的刺激功能和空间配置的区别最好的同意与实验。
Previously, symmetry of network models has been proposed to account for interocular grouping during binocular rivalry. Here, we construct and analyze generalized rivalry network models with different types of symmetry (based on different kinds of excitatory coupling) to derive predictions of possible perceptual states in 12 experiments with four retinal locations. Percepts in binocular rivalry involving more than three locations have not been empirically investigated due to the difficulty in reporting simultaneous percepts at multiple locations. Here. we develop a novel reporting procedure in which the stimulus disappears when the subject is cued to report the simultaneously perceived colors in all four retinal locations. This procedure ensures that simultaneous rather than sequential percepts are reported. The procedure was applied in 12 experiments with six binocular rivalry stimulus configurations. all consisting of dichoptic displays of red and green squares at four locations. We call configurations with an even or odd number of red squares even or odd configurations, respectively. In experiments using even stimulus configurations, we found that even percepts were more frequently observed than odd percepts, whereas in experiments using odd stimulus configurations even and odd percepts were observed with equal probability. The generalized rivalry network models in which couplings depend on stimulus features and spatial configurations was in better agreement with the empirical results. We conclude that the excitatory coupling strength in the horizontal and vertical configurations are different and the coupling strengths between the same color and between different colors are different.NEW & NOTEWORTHY Wilson network models of interocular groupings during binocular rivalry are constructed by considering features that indicate equal coupling strengths. Network symmetries, based on equal couplings, predict percepts. For a four-location rivalry experiment with red or green squares at each location, we analyze different possible Wilson networks. In our experiments we develop a novel reporting procedure and show that networks in which stimulus features and spatial configurations are distinguished best agree with experiments.