Periodic perturbations producing phase-locked fluctuations in visual perception.
Periodic perturbations producing phase-locked fluctuations in visual perception.
复制标题
周期性扰动会产生视觉感知的锁相波动。
DOI：
10.1167/9.2.8
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发表时间：
2009
影响因子：
1.8
通讯作者：
Blake,Randolph
中科院分区：
文献类型：
--
作者：
Kang,Min-Suk;Heeger,David;Blake,Randolph
本文介绍了一种新的心理物理和分析技术，称为周期性扰动，创造和表征知觉波与过渡的视觉刺激在双目竞争和双目融合。观察员跟踪竞争在一个小的，中央区域的空间扩展的竞争对手的目标，而小的，简短的增量对比（“触发器”），反复在反相内的两个竞争对手的目标的不同区域。适当的定时触发产生夹带的竞争交替内的中心区域，最佳时机取决于观察员的本地交替率。触发和状态切换之间的延迟随着触发位置和被监测的中央区域之间的距离而增加，这为主导的行波提供了证据。行波产生的周期性扰动表现出相同的特性，使用一个效率较低，更苛刻的离散试验技术。我们使用周期性扰动来揭示与自发感知交替相关的动力学与观察者之间的行波速度之间的新关系。此外，我们发现行波的证据，即使触发它们的事件是在双目视觉稳定的视野区域内启动的，在没有双目竞争的情况下，这意味着感知组织通常取决于时空背景。
This paper describes a novel psychophysical and analytical technique, called periodic perturbation, for creating and characterizing perceptual waves associated with transitions in visibility of a stimulus during binocular rivalry and during binocular fusion. Observers tracked rivalry within a small, central region of spatially extended rival targets while small, brief increments in contrast (“triggers”) were presented repetitively in antiphase within different regions of the two rival targets. Appropriately timed triggers produced entrainment of rivalry alternations within the central region, with the optimal timing dependent on an observer's native alternation rate. The latency between trigger and state switch increased with the distance between the location of the trigger and the central region being monitored, providing evidence for traveling waves of dominance. Traveling waves produced by periodic perturbation exhibited the same characteristics as those generated using a less efficient, more demanding discrete trial technique. We used periodic perturbation to reveal a novel relation between the dynamics associated with the spontaneous perceptual alternations and the speed of traveling waves across observers. In addition, we found evidence for traveling waves even when the events triggering them were initiated within regions of the visual field where binocular vision was stable, in the absence of binocular rivalry, implying that perceptual organization generally depends on spatio-temporal context.
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神经世界和现实世界
影响因子：
34.7
作者：
P. Churchland;P. Churchland
通讯作者：
P. Churchland
影响因子：
1.8
作者：
TELLER, DY
通讯作者：
TELLER, DY
影响因子：
4.1
作者：
EGLY, R;DRIVER, J;RAFAL, RD
通讯作者：
RAFAL, RD
当行波在途中遇到间隙时
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
Sang;R. Blake;Sang
通讯作者：
Sang
影响因子：
1.8
作者：
S. Nishina;M. Okada;M. Kawato
通讯作者：
M. Kawato