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An integrated framework of spatiotemporal dynamics of binocular rivalry

机译:双目竞争时空动态的综合框架

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Fluctuations in perceptual dominance during binocular rivalry exhibit several hallmark characteristics. First, dominance switches are not periodic but, instead, stochastic: perception changes unpredictably. Second, despite being stochastic, average durations of rivalry dominance vary dependent on the strength of the rival stimuli: variations in contrast, luminance or spatial frequency produce predictable changes in average dominance durations and, hence, in alternation rate. Third, perceptual switches originate locally and spread globally over time, sometimes as traveling waves of dominance: rivalry transitions are spatio-temporal events. This essay 1) reviews recent advances in our understanding of the bases of these three hallmark characteristics of binocular rivalry dynamics and 2) provides an integrated framework to account for those dynamics using cooperative and competitive spatial interactions among local neural circuits distributed over the visual field’s retinotopic map. We close with speculations about how that framework might incorporate top-down influences on rivalry dynamics.
机译:双目竞争期间感知主导地位的波动表现出几种标志特征。首先,优势开关不是周期性的,而是随机:感知不可预测地变化。其次,尽管是随机的,但竞争中的平均持续时间变化依赖于竞争对手刺激的强度:对比度的变化,亮度或空间频率在平均优势持续时间内产生可预测的变化,并且因此在交替速率下产生可预测的变化。第三,感知交换机在本地起源,随着时间的推移,全球传播,有时作为占优势的波浪:竞争过渡是时空事件。本文1)审查最近对我们对双目竞争动态的这三个标志特性的基础的理解,提供了一个综合框架,以考虑使用分布在视野视野的局部神经电路之间的合作和竞争空间交互的那些动态地图。我们与对框架如何纳入对竞争动态的自上而下的影响。

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