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Drawing on minds canvas: Differences in cortical integration patterns between artists and non‐artists

机译:在画布上绘画:艺术家与非艺术家之间的皮质整合模式差异

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摘要

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 all 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. Hum. Brain Mapping, 2005. © 2005 Wiley‐Liss, Inc.
机译:我们的主要问题是要了解,由他们自己选择的心理作图是否会在艺术家和非专业人士中产生不同的脑电特征。为此,我们研究了来自两大类(所有参与者均为女性)的多通道脑电图(EEG)信号:艺术家(专业接受视觉艺术培训)和非艺术家(未经任何艺术培训)。为了评估潜在的同步,该同步被认为是不同皮层区域之间的一般认知整合的平台,受非线性动力学系统理论启发,采用了以下三种措施:(1)基于广义同步的索引; (2)基于平均相位相干性的指标; (3)基于熵的相位同步指数。这三个指标的结果一致:比较休息的任务,艺术家表现出更强的短距离和远距离三角带同步性,而非艺术家表现出的短距离β和伽玛带同步性主要在额叶增强地区;通过比较两组在任务中的表现,与非艺术家相比,艺术家表现出明显更强的三角带同步和阿尔法频段去同步。在同步方面,艺术家发现右半球的强势地位。在艺术家中,低频频段的较高同步性可能是由于更高级的长期视觉艺术记忆的参与以及广泛的自上而下的处理。结果表明,在艺术家中,在绘画的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中的显着不同。哼。 《大脑映射》,2005年。©2005 Wiley-Liss,Inc.。

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