The Creative Brain: Investigation of Brain Activity During Creative Problem Solving by Means of EEG and fMRI
The Creative Brain: Investigation of Brain Activity During Creative Problem Solving by Means of EEG and fMRI
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DOI：
10.1002/hbm.20538
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发表时间：
2009-03-01
影响因子：
4.8
通讯作者：
Neubauer, Aljoscha C.
中科院分区：
文献类型：
--
作者：
Fink, Andreas;Grabner, Roland H.;Neubauer, Aljoscha C.
脑电α波段的皮层活动已被证明是特别敏感的创造性相关的需求，但其功能意义的创造性认知的背景下尚未澄清。具体地说，α活性的增加（即，α同步）对创造性思维的反应可以用不同的方式来解释：作为皮层空闲的功能相关，作为内部自上而下活动的标志，或者更具体地说，作为大脑区域的选择性抑制。我们在两项研究中采用不同的神经生理学测量方法（EEG和fMRI）测量了创造性思维过程中的大脑活动。在这两项研究中，参与者在四个不同的语言任务中发挥创造性的想法。脑电图研究表明，原创想法的产生与额叶脑区的阿尔法同步有关，并与顶叶皮层区域的阿尔法同步的扩散和广泛模式有关。功能磁共振成像研究显示，任务表现与左半球额叶区域的强烈激活有关。此外，我们发现在顶叶颞叶脑区的任务特异性的影响。研究结果表明，创造性思维过程中的脑电图阿尔法带同步可以被解释为积极的认知过程的标志，而不是皮质空转。《脑地图》30：734-748，2009，（c）2008 Wiley-Liss，Inc.
Cortical activity in the EEG alpha band has proven to be particularly sensitive to creativity-related demands, but its functional meaning in the context of creative cognition has not been clarified yet. Specifically, increases in alpha activity (i.e., alpha synchronisation) in response to creative thinking can be interpreted in different ways: As a functional correlate of cortical idling, as a sign of internal top-down activity or, more specifically, as selective inhibition of brain regions. We measured brain activity during creative thinking in two studies employing different neurophysiological measurement methods (EEG and fMRI). In both studies, participants worked on four verbal tasks differentially drawing on creative idea generation. The EEG study revealed that the generation of original ideas was associated with alpha synchronisation in frontal brain regions and with a diffuse and widespread pattern of alpha synchronisation over parietal cortical regions. The fMRI study revealed that task performance was associated with strong activation in frontal regions of the left hemisphere. In addition, we found task-specific effects in parietotemporal brain areas. The findings suggest that EEG alpha band synchronisation during creative thinking can be interpreted as a sign of active cognitive processes rather than cortical idling. Hum Brain Mapp 30:734-748, 2009, (c) 2008 Wiley-Liss, Inc.