ENHANCING VERBAL CREATIVITY: MODULATING CREATIVITY BY ALTERING THE BALANCE BETWEEN RIGHT AND LEFT INFERIOR FRONTAL GYRUS WITH tDCS
ENHANCING VERBAL CREATIVITY: MODULATING CREATIVITY BY ALTERING THE BALANCE BETWEEN RIGHT AND LEFT INFERIOR FRONTAL GYRUS WITH tDCS
复制标题
DOI：
10.1016/j.neuroscience.2015.01.061
复制
发表时间：
2015-04-16
期刊：
影响因子：
3.3
通讯作者：
Shamay-Tsoory, S. G.
中科院分区：
文献类型：
--
作者：
Mayseless, N.;Shamay-Tsoory, S. G.
创造力是产生有价值的新颖想法。先前的研究表明，虽然右半球的区域与新想法的产生有关，但左侧额下回（IFG）的损伤与创造力的增加有关，这表明左侧额下回的损伤可能对创造力有“释放”作用。为了检验这一点，在本研究中，我们使用经颅直流电刺激（tDCS）来调节右侧和左侧IFG的活动。在第一个实验中，我们表明，通过言语发散思维任务测量，虽然右侧IFG的阳极tDCS与左侧IFG的阴极tDCS相结合可以提高创造力，但反向刺激并不影响创造力的产生。为了进一步证实只有改变两个半球之间的平衡对调节创造力至关重要，在第二个实验中，我们表明分别针对左IFG（阴极刺激）或右IFG（阳极刺激）的刺激不会导致言语发散思维测量的创造力变化。这些发现支持了平衡假说，根据该假说，言语创造力需要左右额叶之间的激活平衡，更具体地说，是左右IFG之间的激活平衡。(c) 2015年。Elsevier Ltd.出版。版权所有。
Creativity is the production of novel ideas that have value. Previous research indicated that while regions in the right hemisphere are implicated in the production of new ideas, damage to the left inferior frontal gyrus (IFG) is associated with increased creativity, indicating that the left IFG damage may have a "releasing" effect on creativity. To examine this, in the present study we used transcranial direct current stimulation (tDCS) to modulate activity of the right and the left IFG. In the first experiment we show that whereas anodal tDCS over the right IFG coupled with cathodal tDCS over the left IFG increases creativity as measured by a verbal divergent thinking task, the reverse stimulation does not affect creative production. To further confirm that only altering the balance between the two hemispheres is crucial in modulating creativity, in the second experiment we show that stimulation targeting separately the left IFG (cathodal stimulation) or the right IFG (anodal stimulation) did not result in changes in creativity as measured by verbal divergent thinking. These findings support the balance hypothesis, according to which verbal creativity requires a balance of activation between the right and the left frontal lobes, and more specifically, between the right and the left IFG. (C) 2015 IBRO. Published by Elsevier Ltd. All rights reserved.