Multistable binocular feature-integrated percepts are frozen by intermittent presentation.
Multistable binocular feature-integrated percepts are frozen by intermittent presentation.
复制标题
多稳态双眼特征整合感知被间歇性呈现所冻结。
DOI：
10.1167/11.1.5
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发表时间：
2011
影响因子：
1.8
通讯作者：
Shevell,Steven
中科院分区：
文献类型：
--
作者：
Kang,Para;Shevell,Steven
当两种不同的刺激连续地呈现在每只眼睛上时，感知随着时间的推移在左眼刺激和右眼刺激之间交替。然而，如果同样的刺激间歇性地呈现，知觉交替可以减慢甚至停止（DA Leopold， M. Wilke， A. Maier, & NK Logothetis, 2002； J. Orbach， D. Ehrlich, & HA Heath, 1963）。一个基本问题是持续的神经表征的性质，它调解了稳定的感知。它是对主视眼的表征，还是对一只眼睛的刺激的表征，还是对每只眼睛单独呈现特征的特征综合感知的表征？我们将特征集成感知定义为由视觉系统构建但从未作为刺激呈现的感知。这是使用由竞争性、等量色度模式产生的特征集成感知来测试的（SW Hong & SK Shevell, 2009）。测量结果表明，间歇性观看使特征整合感知稳定下来：当初次观看结束时的感知是特征整合的，在随后的间歇性呈现中也能看到同样的整合感知。结果表明，这些间歇性竞争模式的稳定知觉是由于在双眼特征整合时或之后持续的神经表征，而不是由于持续的优势眼或视网膜刺激的神经表征。
When two different stimuli are presented continuously to each eye, the percept alternates over time between the left-eye stimulus and right-eye stimulus. The perceptual alternation can be slowed or even stopped, however, if the same stimuli are presented intermittently (DA Leopold, M. Wilke, A. Maier, & NK Logothetis, 2002; J. Orbach, D. Ehrlich, & HA Heath, 1963). A basic question is the nature of the persisting neural representation, which mediates the stabilized percept. Is it a representation for the dominant eye, for the stimulus in one eye or for a feature-integrated percept incorporating features presented separately to each eye? We define a feature-integrated percept as one constructed by the visual system but which never is presented as a stimulus. This was tested using a feature-integrated percept resulting from rivalrous, equiluminant chromatic patterns (SW Hong & SK Shevell, 2009). Measurements showed that the feature-integrated percept was stabilized by intermittent viewing: when the percept at the end of the initial viewing period was feature-integrated, this same integrated percept was seen on subsequent intermittent presentations. The results showed that the stabilized percept from these intermittent rivalrous patterns was due to a persisting neural representation at or after binocular feature integration, not to a persisting dominant eye or neural representation of a retinal stimulus.