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Perceptual properties of consciously unavailable stimuli

机译:有意识地无法获得的刺激的感知特性

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摘要

Motion-induced-blindness (MIB) is used to examine accessible properties of high-contrast visual objects which are not consciously available. Visual stimuli consists of a static Gabor target embedded in a rotating grid. Under such conditions, the target perceptually disappears within a few seconds. Following Observers' report of disappearance, a high-contrast Gabor cue is presented. The cue effect on the reappearance of the target within the limited trial time is examined. Surprisingly, results show very low reappearance rates when cues are remote from the target or when orthogonal to it, even when proximal. High reappearance rates are observed with cues proximal and similar to the target. Plaid targets reappear with components cues and plaid cues, however plaid cues are not very effective with component targets. It seems that subconscious objects preserve their location and components-orientation, demonstrating that visual processes sensitive to proximity and feature-similarity operate across the boundary of consciousness. By controlling the duration of target presentation we find that a??reactivatinga?? the target may take 200a??400 msecs, depending on the depth of suppression.
机译:运动引起的失明(MIB)用于检查无法自觉获得的高对比度视觉对象的可访问属性。视觉刺激由嵌入在旋转网格中的静态Gabor目标组成。在这种情况下,目标会在几秒钟内感知消失。在观察员的失踪报告之后,提出了高对比度的Gabor线索。检查在有限的试用时间内对目标重新出现的提示效果。出人意料的是,当提示远离目标或与目标正交时,即使在近端,结果也显示出极低的重现率。在接近目标且与目标相似的提示下,观察到较高的重现率。格子目标会再次出现在组件提示和格子提示中,但是格子提示对于组件目标并不是很有效。潜意识对象似乎保留了它们的位置和成分定向,这表明对接近性和特征相似性敏感的视觉过程在意识边界内运行。通过控制目标呈现的持续时间,我们发现“重新激活a”根据抑制的深度,目标可能需要200毫秒-400毫秒。

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