PDF(Pubmed)
Abstract：
We investigated the involvement of visual awareness in amodal completion, and specifically, whether visual awareness plays a differential role in local versus global completion, using a primed shape discrimination paradigm and the color-opponent flicker technique to render the prime invisible. In four experiments, participants discriminated the shape of a target preceded by a partly occluded or a neutral prime. All primes were divergent occlusion patterns in which the local completion is based on good continuation of the contours at the point of occlusion and the global completion is based on maximum symmetry. The target corresponded to the shape that could arise as a result of local or global completion of the occluded prime. For each experiment with an invisible prime we conducted a version with a visible prime. Our results suggest that local completion, but not global completion, of a partly occluded shape can take place in the absence of visual awareness, but apparently only when the visible occluded shape generates a single, local completion. No completion, either local or global, appears to take place in the absence of visual awareness when the visible occluded shape generates multiple completions. The implications of these results to the differential role of visual awareness in local and global completions and to the relationship between multiple completions and unconscious amodal completions are discussed.
摘要：
我们调查了视觉意识在模态完成中的参与，特别是,视觉意识是否在局部完成和全局完成中起着不同的作用，使用基本形状辨别范例和颜色对手闪烁技术来使基本不可见。在四个实验中，参与者区分了目标的形状，然后是部分遮挡或中性的素数。所有素数都是发散的遮挡模式，其中局部完成基于遮挡点处轮廓的良好延续，而全局完成基于最大对称性。目标对应于由于局部或整体完成闭塞的灌注而可能出现的形状。对于每个具有不可见质数的实验，我们都进行了一个具有可见质数的版本。我们的结果表明，当地竣工，但不是全球完成，部分遮挡的形状可以在没有视觉意识的情况下发生，但显然只有当可见的遮挡形状产生一个，本地完成。没有完成,无论是本地还是全球，当可见的遮挡形状产生多个完井时，似乎发生在没有视觉意识的情况下。讨论了这些结果对视觉意识在局部和全球完井中的不同作用以及多次完井与无意识的完井之间的关系的影响。
