Priming of object detection under continuous flash suppression depends on attention but not on part-whole configuration.
Priming of object detection under continuous flash suppression depends on attention but not on part-whole configuration.
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DOI：
10.1167/15.3.15
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发表时间：
2015-03
影响因子：
1.8
通讯作者：
T. Stein;V. Thoma;P. Sterzer
中科院分区：
文献类型：
--
作者：
T. Stein;V. Thoma;P. Sterzer
先前的研究表明，视觉对象的识别既可以依赖于视觉依赖的整体表征，也可以依赖于视觉独立的分析表征，依赖于视觉注意力。在这里，我们问是否最初的意识检测对象揭示了类似的依赖关系，因此可能共享类似的感知机制。在试验开始时，我们使用连续的闪光抑制来使在熟悉视图中呈现的物体不可见，并记录这些目标物体进入意识所需的时间。目标对象之前有空间参与或未参与的启动，这些启动要么显示在与目标相同的熟悉视图中，要么显示在水平分裂（即，它们的一半交换位置），以破坏整体处理。与未启动基线相比，所有启动条件下的抑制时间都较短。尽管空间注意增强了对意识的启动效应，但即使是无人注意的启动也促进了对相关目标的意识，这表明物体检测并不完全符合需要注意的分析对象表征的想法。此外，在与目标相同的熟悉视图中显示的启动效应和水平分割的启动效应强度相似，表明整体（模板式）表征在对象检测中不起整体作用。这些结果表明，物体的初始检测依赖于物体特征的表示，而不是用于识别的整体表示。因此，介导有意识客体检测的知觉机制与那些潜在客体识别的知觉机制明显不同。
Previous research has shown that the identification of visual objects can rely on both view-dependent, holistic as well as view-independent, analytic representation, depending on visual attention. Here, we asked whether the initial conscious detection of objects reveals similar dependencies and may therefore share similar perceptual mechanisms. We used continuous flash suppression to render objects presented in familiar views invisible at the beginning of a trial and recorded the time these target objects needed to break into awareness. Target objects were preceded by spatially attended or unattended primes that were either shown in the same familiar view as the targets or horizontally split (i.e., with their halves swapping positions) in order to disrupt holistic processing. Relative to an unprimed baseline, suppression times were shorter for all priming conditions. Although spatial attention enhanced this priming effect on access to awareness, even unattended primes facilitated awareness of a related target, indicating that object detection does not fully concur with the idea of attention-demanding analytic object representations. Moreover, priming effects were of similar strength for primes shown in the same familiar view as the targets and for horizontally split primes, indicating that holistic (template-like) representations do not play an integral role in object detection. These results suggest that the initial detection of an object relies on representations of object features rather than holistic representations used for recognition. The perceptual mechanisms mediating conscious object detection are therefore markedly different from those underlying object identification.