双眼竞争过程中优势交替的原因是什么？
What causes alternations in dominance during binocular rivalry?
作者信息
Kang Min-Suk, Blake Randolph
机构信息
Department of Psychology, Vanderbilt University, Wilson Hall, 111 21st Ave. South, Nashville, TN 37240, USA.
出版信息
Atten Percept Psychophys. 2010 Jan;72(1):179-86. doi: 10.3758/APP.72.1.179.
Several mechanisms have been proposed to account for perceptual alterations during binocular rivalry, including neural adaptation and neural noise. However, the importance of neural adaptation for producing perceptual alterations has been challenged in several articles (Y.-J. Kim, Grabowecky, & Suzuki, 2006; Moreno-Bote, Rinzel, & Rubin, 2007). We devised an "online" adaptation procedure to reexamine the role of adaptation in binocular rivalry. Periods of adaptation inserted into rivalry observation periods parametrically alter the dynamics of rivalry such that increased adaptation duration decreases dominance duration, which cannot be accounted for by neural noise. Analysis of the average dominance durations and their variance (coefficient of variation) provides evidence for an increasingly important role of noise in rivalry alternations as a given dominance period continues in time, consistent with recent computational models.
人们提出了几种机制来解释双眼竞争过程中的知觉改变，包括神经适应和神经噪声。然而，神经适应对产生知觉改变的重要性在几篇文章中受到了挑战（Y.-J. Kim、Grabowecky和Suzuki，2006年；Moreno-Bote、Rinzel和Rubin，2007年）。我们设计了一种“在线”适应程序，以重新审视适应在双眼竞争中的作用。在竞争观察期插入适应期会参数性地改变竞争的动态，使得适应持续时间增加会减少优势持续时间，这无法用神经噪声来解释。对平均优势持续时间及其方差（变异系数）的分析提供了证据，表明随着给定优势期持续时间的延长，噪声在竞争交替中的作用越来越重要，这与最近的计算模型一致。
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