Temporal resolution for the perception of features and conjunctions
Temporal resolution for the perception of features and conjunctions
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DOI：
10.1523/jneurosci.3860-06.2007
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发表时间：
2007-01-24
影响因子：
5.3
通讯作者：
Reynolds, John H.
中科院分区：
文献类型：
--
作者：
Bodelon, Clara;Fallah, Mazyar;Reynolds, John H.
视觉系统将刺激分解为它们的组成特征，由具有不同特征选择性的神经元表示。这些特征选择神经元携带的信号如何整合到连贯的物体表征中是未知的。为了限制可能的整合机制，我们量化了这两个功能的颜色，方向和连接的感知的时间分辨率。我们发现每个特征的时间分辨率都比它们的结合要高得多，这表明将特征整合到感知整体中需要时间。这一发现对可能介导这种形式的感知整合的机制施加了时间限制。
The visual system decomposes stimuli into their constituent features, represented by neurons with different feature selectivities. How the signals carried by these feature-selective neurons are integrated into coherent object representations is unknown. To constrain the set of possible integrative mechanisms, we quantified the temporal resolution of perception for color, orientation, and conjunctions of these two features. We find that temporal resolution is measurably higher for each feature than for their conjunction, indicating that time is required to integrate features into a perceptual whole. This finding places temporal limits on the mechanisms that could mediate this form of perceptual integration.