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Your Brain on Art: Emergent Cortical Dynamics During Aesthetic Experiences

机译:您的大脑艺术:审美体验中的新兴皮质动力学

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摘要

The brain response to conceptual art was studied with mobile electroencephalography (EEG) to examine the neural basis of aesthetic experiences. In contrast to most studies of perceptual phenomena, participants were moving and thinking freely as they viewed the exhibit The Boundary of Life is Quietly Crossed by Dario Robleto at the Menil Collection-Houston. The brain activity of over 400 subjects was recorded using dry-electrode and one reference gel-based EEG systems over a period of 3 months. Here, we report initial findings based on the reference system. EEG segments corresponding to each art piece were grouped into one of three classes (complex, moderate, and baseline) based on analysis of a digital image of each piece. Time, frequency, and wavelet features extracted from EEG were used to classify patterns associated with viewing art, and ranked based on their relevance for classification. The maximum classification accuracy was 55% (chance = 33%) with delta and gamma features the most relevant for classification. Functional analysis revealed a significant increase in connection strength in localized brain networks while subjects viewed the most aesthetically pleasing art compared to viewing a blank wall. The direction of signal flow showed early recruitment of broad posterior areas followed by focal anterior activation. Significant differences in the strength of connections were also observed across age and gender. This work provides evidence that EEG, deployed on freely behaving subjects, can detect selective signal flow in neural networks, identify significant differences between subject groups, and report with greater-than-chance accuracy the complexity of a subject's visual percept of aesthetically pleasing art. Our approach, which allows acquisition of neural activity “in action and context,” could lead to understanding of how the brain integrates sensory input and its ongoing internal state to produce the phenomenon which we term aesthetic experience.
机译:用移动脑电图(EEG)研究了大脑对概念艺术的反应,以检查审美经验的神经基础。与大多数感知现象研究相反,参与者在观看梅尼尔收藏-休斯顿的展览“生活的边界被达里奥·罗布雷托安静地穿越”时自由移动和思考。使用干电极和一种基于凝胶的参考脑电图系统在3个月内记录了400多名受试者的大脑活动。在这里,我们报告基于参考系统的初步发现。基于对每个艺术品的数字图像的分析,将与每个艺术品相对应的EEG段分为三类(复杂,中等和基线)之一。从EEG中提取的时间,频率和小波特征用于对与观看艺术相关的模式进行分类,并根据它们与分类的相关性进行排名。最大分类精度为55%(机会= 33%),其中与分类最相关的Delta和Gamma特征。功能分析显示,局部大脑网络的连接强度显着提高,而与查看空白墙相比,受试者查看的是最美观的艺术品。信号流的方向显示较宽的后部区域较早募集,随后发生局灶性前部激活。在不同年龄和性别的人中,连接强度也存在显着差异。这项工作提供的证据表明,在行为自由的受试者身上部署的EEG可以检测神经网络中的选择性信号流,识别受试者组之间的显着差异,并以极高的准确性报告受试者对美学上令人愉悦的艺术品的视觉感知的复杂性。我们的方法允许在“行动和情境”中获取神经活动,可能会导致人们理解大脑如何整合感觉输入及其持续的内部状态,以产生我们称之为审美体验的现象。

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