Attending to What and Where: Background Connectivity Integrates Categorical and Spatial Attention.
Attending to What and Where: Background Connectivity Integrates Categorical and Spatial Attention.
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DOI：
10.1162/jocn_a_01284
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发表时间：
2018-09
影响因子：
3.2
通讯作者：
Turk-Browne NB
中科院分区：
文献类型：
--
作者：
Tompary A;Al-Aidroos N;Turk-Browne NB
自上而下的注意力根据信息在空间中的位置及其外观来优先处理整个视觉皮层中与目标相关的信息。尽管注意力目标通常同时具有空间和特征成分，但大多数关于注意力神经基础的研究都分别研究了这些成分。在这里，我们通过检查具有不同选择性的视觉区域之间的功能连接的注意调节来研究这些注意成分是如何整合的。具体来说，我们使用功能磁共振成像来测量早期视觉皮层的空间选择性区域和腹侧颞叶皮层的类别选择区域之间的时间相关性，同时参与者执行一项受益于空间和类别注意力的任务。我们发现分类注意力调节类别选择区域的连通性，但仅限于编码空间关注位置的视网膜主题区域。类似地，空间注意力仅通过关注类别的区域编码来调节视网膜主题区域的连通性。这种结果模式表明，连接性的注意力调节是由空间选择和特征偏差驱动的。结合对额顶叶区域的探索性分析（跟踪视觉区域之间连接的这些变化），这项研究开始揭示注意力的不同组成部分如何整合以支持更复杂的行为目标。
Top–down attention prioritizes the processing of goal-relevant information throughout visual cortex based on where that information is found in space and what it looks like. Whereas attentional goals often have both spatial and featural components, most research on the neural basis of attention has examined these components separately. Here we investigated how these attentional components are integrated by examining the attentional modulation of functional connectivity between visual areas with different selectivity. Specifically, we used fMRI to measure temporal correlations between spatially selective regions of early visual cortex and category-selective regions in ventral temporal cortex while participants performed a task that benefitted from both spatial and categorical attention. We found that categorical attention modulated the connectivity of category-selective areas, but only with retinotopic areas that coded for the spatially attended location. Similarly, spatial attention modulated the connectivity of retinotopic areas only with the areas coding for the attended category. This pattern of results suggests that attentional modulation of connectivity is driven both by spatial selection and featural biases. Combined with exploratory analyses of frontoparietal areas that track these changes in connectivity among visual areas, this study begins to shed light on how different components of attention are integrated in support of more complex behavioral goals.
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影响因子：
5.7
作者：
Fischl, B;Sereno, MI;Dale, AM
通讯作者：
Dale, AM
影响因子：
16.2
作者：
Bosman CA;Schoffelen JM;Brunet N;Oostenveld R;Bastos AM;Womelsdorf T;Rubehn B;Stieglitz T;De Weerd P;Fries P
通讯作者：
Fries P
影响因子：
3.7
作者：
Bartsch, Mandy V.;Boehler, Carsten N.;Hopf, Jens-Max
通讯作者：
Hopf, Jens-Max
影响因子：
5.7
作者：
Dale, AM;Fischl, B;Sereno, MI
通讯作者：
Sereno, MI
影响因子：
56.9
作者：
Baldauf, Daniel;Desimone, Robert
通讯作者：
Desimone, Robert