Vividness of Visual Imagery Depends on the Neural Overlap with Perception in Visual Areas
Vividness of Visual Imagery Depends on the Neural Overlap with Perception in Visual Areas
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DOI：
10.1523/jneurosci.3022-16.2016
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发表时间：
2017-02-01
影响因子：
5.3
通讯作者：
van Gerven, Marcel A. J.
中科院分区：
文献类型：
--
作者：
Dijkstra, Nadine;Bosch, Sander E.;van Gerven, Marcel A. J.
对图像生动性个体差异的神经相关性的研究指出了早期视觉皮层的重要作用。然而，个体内部的生动性也有很大的波动，以至于只看人与人之间的差异必然会模糊画面。在这项研究中，我们表明，在人类受试者的视觉图像的生动性的时刻到时刻的变化，取决于一个大的网络的大脑区域，包括额叶，顶叶和视觉区域的活动。此外，使用一种新的多变量分析技术，我们表明，在整个视觉系统的图像和感知之间的神经重叠与经验丰富的图像生动。这表明，意象生动性的神经基础比个体差异研究所显示的要复杂得多。
Research into the neural correlates of individual differences in imagery vividness point to an important role of the early visual cortex. However, there is also great fluctuation of vividness within individuals, such that only looking at differences between people necessarily obscures the picture. In this study, we show that variation in moment-to-moment experienced vividness of visual imagery, within human subjects, depends on the activity of a large network of brain areas, including frontal, parietal, and visual areas. Furthermore, using a novel multivariate analysis technique, we show that the neural overlap between imagery and perception in the entire visual system correlates with experienced imagery vividness. This shows that the neural basis of imagery vividness is much more complicated than studies of individual differences seemed to suggest.