Naber Marnix, Gruenhage Gina, Einhäuser Wolfgang
Philipps-University Marburg, Department of Neurophysics, Germany.
Vision Res. 2010 Apr 7;50(8):818-28. doi: 10.1016/j.visres.2010.02.004. Epub 2010 Feb 13.
In rivalry, constant stimuli allow several interpretations ("percepts"). Percepts are characterized by their probability to occur and by the duration of their dominance. During continuous presentation of bi-stable stimuli, both percept probabilities are trivially 50%. To disentangle the processes triggering a percept from those stabilizing it, we introduce tri-stable stimuli having three percepts. We find the probability and dominance duration of a percept independently adjustable. Percept probabilities and dominance durations show mutual dependencies across several perceptual switches. Consequently, the current perceptual experience depends on perceptual history; therefore, rivalry--even for continuous presentation--is not a memory-less process.
在竞争中，持续的刺激会产生多种解释（“感知”）。感知的特征在于其发生的概率以及主导的持续时间。在双稳态刺激的持续呈现过程中，两种感知的概率显然都是50%。为了区分引发感知的过程和稳定感知的过程，我们引入了具有三种感知的三稳态刺激。我们发现一种感知的概率和主导持续时间是可以独立调节的。感知概率和主导持续时间在多个感知转换中呈现出相互依赖关系。因此，当前的感知体验取决于感知历史；所以，即使是持续呈现的竞争，也不是一个无记忆的过程。
