A common oscillator for perceptual rivalries?
A common oscillator for perceptual rivalries?
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DOI：
10.1068/p3472
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发表时间：
2003-01-01
期刊：
影响因子：
1.7
通讯作者：
Pettigrew, JD
中科院分区：
文献类型：
--
作者：
Carter, OL;Pettigrew, JD
知觉竞争是一种意识体验的振荡，尽管感觉输入是单一的，如果模糊的话。目前的兴趣主要集中在双眼竞争的神经位点上的争议，这是一种涉及许多不同皮层区域的各种感知竞争。关于高级处理与初级视觉皮层相比的相对作用，以及不同形式的竞争涉及不同皮层区域的建议，争论仍在继续。在这里，我们表明，在运动诱发性失明（MIB）的消失和再现的时间模式（Bonneh等人，2001自然411 798-801）是高度相关的模式，在同一个人的双眼竞争期间报道的振荡。这种相关性适用于广泛的个体间差异。致幻剂LSD的效果惊人地证实了这两种现象在时间上的相似性，它在两种感知振荡中产生了相同的、非凡的节奏性增加模式。此外，MIB证明了先前认为的双眼竞争的两个特性。也就是说，支配期的分布可以近似为伽马分布，并且与Levelt的双眼竞争的第二个命题一致，一个感知阶段的支配可以通过减少相对阶段的支配时间来增加。我们的结论是：（i）MIB是一种形式的感知竞争，（ii）可能有一个共同的振荡器负责所有形式的感知竞争的时间方面。
Perceptual rivalry is an oscillation of conscious experience that takes place despite univarying, if ambiguous, sensory input. Much current interest is focused on the controversy over the neural site of binocular rivalry, a variety of perceptual rivalry for which a number of different cortical regions have been implicated. Debate continues over the relative role of higher levels of processing compared with primary visual cortex and the suggestion that different forms of rivalry involve different cortical areas. Here we show that the temporal pattern of disappearance and reappearance in motion-induced blindness (MIB) (Bonneh et al, 2001 Nature 411 798-801) is highly correlated with the pattern of oscillation reported during binocular rivalry in the same individual. This correlation holds over a wide range of inter-individual variation. Temporal similarity in the two phenomena was strikingly confirmed by the effects of the hallucinogen LSD, which produced the same, extraordinary, pattern of increased rhythmicity in both kinds of perceptual oscillation. Furthermore, MIB demonstrates the two properties previously considered characteristic of binocular rivalry. Namely the distribution of dominance periods can be approximated by a gamma distribution and, in line with Levelt's second proposition of binocular rivalry, predominance of one perceptual phase can be increased through a reduction in the predominance time of the opposing phase. We conclude that (i) MIB is a form of perceptual rivalry, and (ii) there may be a common oscillator responsible for timing aspects of all forms of perceptual rivalry.