Hemispheric Differences within the Fronto-Parietal Network Dynamics Underlying Spatial Imagery.
Hemispheric Differences within the Fronto-Parietal Network Dynamics Underlying Spatial Imagery.
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DOI：
10.3389/fpsyg.2012.00214
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发表时间：
2012
影响因子：
3.8
通讯作者：
Schuhmann T
中科院分区：
文献类型：
--
作者：
Sack AT;Schuhmann T
空间成像是指对空间特征的检查和评估（例如，距离、相对位置、配置）和/或空间操纵（例如，旋转、移位、重新定向）。在过去的几十年里，心理物理学和功能性脑成像研究表明，任何基于心理图像的空间编码信息和/或操作的处理（i）与基于真实的视觉图像的空间处理的情况下类似的行为要求和限制，（ii）一致地激活大脑中广泛分布的皮层网络的几个节点。这些节点包括背侧额顶叶和腹侧枕颞视觉处理通路内的区域，代表空间意象的“什么”与“哪里”方面。在这里，我们描述的证据，从功能性脑成像和脑干扰的研究表明，系统的背侧额顶叶网络内的差异，在执行的空间图像。重要的是，这种半球差异和功能侧化原则也存在于这些网络内部和之间的有效大脑网络连接中，信息流的方向是从前额叶/运动前区到后顶叶皮层。在试图整合这些发现的半球偏侧化和额顶叶的相互作用，我们认为，空间意象构成了一个多方面的认知结构，可以在几个不同的心理子过程中分离，每个与特定的偏侧额顶叶（子）网络内的活动，形成这里提出的空间意象的动态网络模型的基础。
Spatial imagery refers to the inspection and evaluation of spatial features (e.g., distance, relative position, configuration) and/or the spatial manipulation (e.g., rotation, shifting, reorienting) of mentally generated visual images. In the past few decades, psychophysical as well as functional brain imaging studies have indicated that any such processing of spatially coded information and/or manipulation based on mental images (i) is subject to similar behavioral demands and limitations as in the case of spatial processing based on real visual images, and (ii) consistently activates several nodes of widely distributed cortical networks in the brain. These nodes include areas within both, the dorsal fronto-parietal as well as ventral occipito-temporal visual processing pathway, representing the “what” versus “where” aspects of spatial imagery. We here describe evidence from functional brain imaging and brain interference studies indicating systematic hemispheric differences within the dorsal fronto-parietal networks during the execution of spatial imagery. Importantly, such hemispheric differences and functional lateralization principles are also found in the effective brain network connectivity within and across these networks, with a direction of information flow from anterior frontal/premotor regions to posterior parietal cortices. In an attempt to integrate these findings of hemispheric lateralization and fronto-to-parietal interactions, we argue that spatial imagery constitutes a multifaceted cognitive construct that can be segregated in several distinct mental sub processes, each associated with activity within specific lateralized fronto-parietal (sub) networks, forming the basis of the here proposed dynamic network model of spatial imagery.
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影响因子：
2.6
作者：
Kail, R
通讯作者：
Kail, R
影响因子：
3.4
作者：
Cattaneo, Zaira;Vecchi, Tomaso;Silvanto, Juha
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影响因子：
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作者：
Carpenter, PA;Just, MA;Thulborn, K
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影响因子：
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作者：
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Singer, W
DOI：
10.1073/pnas.88.5.1621
发表时间：
1991-03-01
影响因子：
11.1
作者：
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通讯作者：
RAPOPORT, SI