Shannon Robert W, Patrick Christopher J, Jiang Yi, Bernat Edward, He Sheng
Department of Psychology, University of Minnesota, Minneapolis, MN, USA.
J Vis. 2011 Mar 9;11(3):10.1167/11.3.8 8. doi: 10.1167/11.3.8.
Ordinarily, the visual system provides an unambiguous representation of the world. However, at times alternative plausible interpretations of a given stimulus arise, resulting in a dynamic perceptual alternation of the differing interpretations, commonly referred to as bistable or rivalrous perception. Recent research suggests that common neural mechanisms may be involved in the dynamics of very different types of bistable phenomena. Further, evidence has emerged that genetic factors may be involved in determining the rate of switch for at least one form of bistable perception, known as binocular rivalry. The current study evaluated whether genetic factors contribute to the switching dynamics for distinctly different variants of bistable perception in the same participant sample. Switching rates were recorded for MZ and DZ twin participants in two different bistable perception tasks, binocular rivalry and the Necker Cube. Strong concordance in switching rates across both tasks was evident for MZ but not DZ twins, indicating that genetic factors indeed contribute to the dynamics of multiple forms of bistable perception.
通常情况下，视觉系统会提供对世界的清晰表征。然而，有时对于给定刺激会出现多种合理的解释，从而导致不同解释之间的动态感知交替，这通常被称为双稳态或竞争性感知。最近的研究表明，共同的神经机制可能参与了非常不同类型的双稳态现象的动态过程。此外，有证据表明遗传因素可能参与决定至少一种双稳态感知形式（即双眼竞争）的转换速率。本研究评估了在同一参与者样本中，遗传因素是否对截然不同的双稳态感知变体的转换动态有贡献。记录了同卵双胞胎（MZ）和异卵双胞胎（DZ）参与者在两项不同的双稳态感知任务（双眼竞争和内克尔立方体）中的转换速率。同卵双胞胎在两项任务中的转换速率表现出很强的一致性，而异卵双胞胎则不然，这表明遗传因素确实对多种形式的双稳态感知动态有贡献。
