Action at a distance on object-related ventral temporal representations.
Action at a distance on object-related ventral temporal representations.
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对与物体相关的腹侧时间表征的远距离动作。
DOI：
10.1016/j.cortex.2019.02.018
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Almeida,Jorge
中科院分区：
文献类型：
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作者：
Lee,Dongha;Mahon,BradfordZ;Almeida,Jorge
腹侧颞叶皮层对物体的表征对刺激的转换具有相对的弹性。有新兴的认识，腹侧的时间对象表征伪造通过一个更广泛的网络区域，接收独立的输入有关的刺激之间的相互作用。在这里，我们测试腹侧的时间表示是否是因果调制的破坏处理在远端的关联领域。我们使用经颅直流电刺激（tDCS）刺激左侧顶叶区域和功能性磁共振成像（fMRI）来测量腹侧流中与对象相关的神经反应。我们发现，代表性的几何形状和类别的可辨别性内腹侧颞叶皮层，以及腹侧颞叶和顶叶区域之间的功能连接，增强阳极相比，阴极刺激左顶叶联合皮层。这些结果表明，腹侧的时间表示可以通过处理远端腹侧流的因果调制。
The representation of objects in ventral temporal cortex is relatively resilient to transformations in the stimuli. There is emerging recognition that ventral temporal object representations are forged via interactions among a broader network of regions that receive independent inputs about a stimulus. Here we test whether ventral temporal representations are causally modulated by disrupting processing in distal associative areas. We used transcranial direct current stimulation (tDCS) to stimulate left parietal areas and functional Magnetic Resonance Imaging (fMRI) to measure object-related neural responses in the ventral stream. We find that representational geometries and category discriminability within ventral temporal cortex, as well as functional connectivity between ventral temporal and parietal areas, are enhanced by anodal compared to cathodal stimulation of left parietal associative cortex. These results demonstrate that ventral temporal representations can be causally modulated by processing distal to the ventral stream.