Drawing on mind's canvas: Differences in cortical integration patterns between artists and non-artists
Drawing on mind's canvas: Differences in cortical integration patterns between artists and non-artists
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DOI：
10.1002/hbm.20104
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发表时间：
2005-09-01
影响因子：
4.8
通讯作者：
Petsche, H
中科院分区：
文献类型：
--
作者：
Bhattacharya, J;Petsche, H
我们的首要问题是了解艺术家和外行人在心里创作自己选择的图画是否会产生不同的脑电特征。为此，我们研究了来自两大群体（所有参与者均为女性）的多通道脑电图 (EEG) 信号：艺术家（接受过视觉艺术专业培训）和非艺术家（没有接受过任何艺术培训）。为了评估底层同步，假设底层同步是不同皮层区域之间一般认知整合的平台，受非线性动力系统理论启发，采用了以下三种测量方法：（1）基于广义同步的指标； (2)基于平均相位相干性的指标； (3)基于熵的相位同步指标。三个指标的一致结果如下：将任务与休息进行比较，艺术家表现出明显更强的短程和长程 delta 带同步，而非艺术家则主要在额叶区域表现出短程 beta 和 gamma 带同步的增强；在任务期间比较两组，艺术家表现出比非艺术家明显更强的 delta 波段同步和 alpha 波段去同步。艺术家们在同步性方面发现了强烈的右半球优势。对于艺术家来说，低频段的更高同步性可能是由于更先进的长期视觉艺术记忆和广泛的自上而下的处理的参与。结果表明，艺术家在绘画心理创作过程中皮质区域之间的功能合作模式与非艺术家显着不同。
Our primary question was to learn whether mentally composing drawings of their own choice produce different brain electric features in artists and laymen. To this purpose, we studied multichannel electroencephalograph (EEG) signals from two broad groups (all participants were females): artists (professionally trained in visual arts) and non-artists (without any training in art). To assess the underlying synchronization, which is assumed to be the platform for general cognitive integration between different cortical regions, three measures inspired by nonlinear dynamical system theory were applied as follows: (1) index based on generalized synchronization; (2) index based on mean phase coherence; and (3) index of phase synchrony based on entropy. Results consistent over a I I three measures were as follows: comparing the tasks to rest, the artists showed significantly stronger short- and long-range delta band synchronization, whereas the non-artists showed enhancement in short-range beta and gamma band synchronization primarily in frontal regions; comparing the two groups during the tasks, the artists showed significantly stronger delta band synchronization and alpha band desynchronization than did the non-artists. Strong right hemispheric dominance in terms of synchronization was found in the artists. In artists, the higher synchrony in the low-frequency band is possibly due to the involvement of a more advanced long-term visual art memory and to extensive top-down processing. The results demonstrate that in artists, patterns of functional cooperation between cortical regions during mental creation of drawings were significantly different from those in non-artists.