Brascamp Jan W, van Ee Raymond, Pestman Wiebe R, van den Berg Albert V
Functional Neurobiology and Helmholtz Institute, Utrecht University, Utrecht, The Netherlands.
J Vis. 2005 Apr 4;5(4):287-98. doi: 10.1167/5.4.1.
Studying the temporal dynamics of bistable perception can be useful for understanding neural mechanisms underlying the phenomenon. We take a closer look at those temporal dynamics, using data from four different ambiguous stimuli. We focus our analyses on two recurrent themes in bistable perception literature. First, we address the question whether percept durations follow a gamma distribution, as is commonly assumed. We conclude that this assumption is not justified by the gamma distribution's approximate resemblance to distributions of percept durations. We instead present two straightforward distributions of reciprocal percept durations (i.e., rates) that both easily surpass the classic gamma distribution in terms of resemblance to empirical data. Second, we compare the distributions arising from binocular rivalry with those from other forms of bistable perception. Parallels in temporal dynamics between those classes of stimuli are often mentioned as an indication of a similar neural basis, but have never been studied in detail. Our results demonstrate that the distributions arising from binocular rivalry and other forms of bistable perception are indeed similar up to a high level of detail.
研究双稳态感知的时间动态对于理解该现象背后的神经机制可能是有用的。我们使用来自四种不同模糊刺激的数据，更仔细地研究这些时间动态。我们将分析重点放在双稳态感知文献中的两个反复出现的主题上。首先，我们探讨感知持续时间是否如通常所假设的那样遵循伽马分布这一问题。我们得出结论，伽马分布与感知持续时间分布的近似相似性并不能证明这一假设是合理的。相反，我们提出了两种简单的倒数感知持续时间（即速率）分布，它们在与经验数据的相似性方面都轻松超过了经典的伽马分布。其次，我们将双眼竞争产生的分布与其他形式的双稳态感知产生的分布进行比较。这些类别的刺激在时间动态上的相似之处经常被提及，作为神经基础相似的一个指标，但从未进行过详细研究。我们的结果表明，双眼竞争和其他形式的双稳态感知产生的分布在高度细节上确实相似。
