How Spatial Frequencies and Visual Awareness Interact During Face Processing
How Spatial Frequencies and Visual Awareness Interact During Face Processing
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DOI：
10.1177/0956797609354064
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发表时间：
2010-01-01
影响因子：
8.2
通讯作者：
Kouider, Sid
中科院分区：
文献类型：
--
作者：
de Gardelle, Vincent;Kouider, Sid
在视觉中，高和低空间频率在认知和神经水平上被分离。通常，高空间频率(HSF)与沿腹侧皮质流的缓慢分析有关，而低空间频率(LSF)与快速和自动处理相关。这些发现表明，空间频率处理和视觉知觉之间存在特定的关系。我们使用具有可变能见度的混合素数图像的蒙版人脸启动来研究这个问题。我们发现LSF和HSF信息的阈值下启动，以及空间频率和可见度之间的强烈交互作用：与HSF相关的启动随着刺激可见度的增加而增加，而LSF的影响保持不变。我们认为，这些结果限制了从粗到精的视觉模型以及将腹流活动等同于知觉感知的模型的有效性。根据诊断方法解释我们的结果表明，意识和诊断能力之间存在密切关系。
In vision, high and low spatial frequencies have been dissociated at the cognitive and neural levels. Usually, high spatial frequency (HSF) is associated with slow analysis along the ventral cortical stream, and low spatial frequency (LSF) is associated with fast and automatic processing. These findings suggest a specific relation between spatial-frequency processing and visual awareness. We investigated this issue using masked-face priming with hybrid prime images of variable visibility. We found subliminal priming for both LSF and HSF information, along with a strong interaction between spatial frequency and visibility: HSF-related priming increased with stimulus visibility, whereas LSF influences remained unchanged. We argue that the results limit the validity of the coarse-to-fine model of vision and of models equating ventral-stream activity with perceptual awareness. Interpreting our results in light of the diagnostic approach suggests a close relation between awareness and diagnosticity.