注意力对人 V1 的 fMRI 反应的调制与色觉定义的方向和对比度的不同空间图一致。
Attentional modulation of fMRI responses in human V1 is consistent with distinct spatial maps for chromatically defined orientation and contrast.
机构信息
Department of Cognitive, Linguistic & Psychological Sciences, Brown University, Providence, Rhode Island 02912, USA.
出版信息
J Neurosci. 2011 Sep 7;31(36):12900-5. doi: 10.1523/JNEUROSCI.0580-11.2011.
Abstract
Attending to different stimulus features such as contrast or orientation can change the pattern of neural responses in human V1 measured with fMRI. We show that these pattern changes are much more distinct for colored stimuli than for achromatic stimuli. This is evidence for a classic model of V1 functional architecture in which chromatic contrast and orientation are coded in spatially distinct neural domains, while achromatic contrast and orientation are not.
摘要
关注不同的刺激特征，如对比度或方向，可以改变 fMRI 测量的人类 V1 中的神经反应模式。我们表明，与非彩色刺激相比，彩色刺激的这些模式变化更为明显。这证明了 V1 功能架构的经典模型，其中颜色对比度和方向在空间上不同的神经区域中编码，而非颜色对比度和方向则不是。
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