Temporal dynamics of neural activity in an integration of visual and contextual information in an esthetic preference task
Temporal dynamics of neural activity in an integration of visual and contextual information in an esthetic preference task
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DOI：
10.1016/j.neuropsychologia.2013.03.003
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发表时间：
2013-05
期刊：
影响因子：
2.6
通讯作者：
Y. Noguchi;Miharu Murota
中科院分区：
文献类型：
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作者：
Y. Noguchi;Miharu Murota
在美术馆观看艺术作品时，我们通过整合至少两种类型的信息来评估它们：它们的视觉属性(例如，颜色、对称性和比例)和伴随它们的上下文信息(例如，艺术家的头衔和名字)。大脑整合艺术品的视觉和背景信息的速度有多快还有待研究。我们使用脑电图仪(EEG)研究了没有艺术专业经验的受试者观看雕塑(古典和文艺复兴时期的杰作，其特征是黄金比例的标准比例)的图像时的神经活动，并对它们的吸引力进行了五个等级的评级。在每一次试验的开始，我们通过展示关于其真实性(无论是真的还是假的)的信息来操纵受试者对即将到来的雕塑的期望，尽管所有的图像实际上都是从真实的艺术品中提取的。然后展示了雕塑的图像，要么是按原来的比例，要么是被照片编辑软件变形了。这种2×2析因设计使我们能够确定EEG反应的每个成分对上下文信息(真实或虚假)、视觉信息(原始或变形)或两者都敏感。结果显示，在艺术品呈现后200-300ms出现的阳性脑电成分(主要分布在顶叶皮质)的幅度受到视觉和背景因素的显著调制，表明这两种类型的信息在大脑中迅速整合。
While viewing works of art in galleries, we evaluate them by integrating at least two types of information: their visual properties (e.g., colors, symmetry, and proportion) and contextual information accompanying them (e.g., titles and names of artists). How rapidly the brain integrates visual and contextual information of artworks remains to be investigated. Using electroencephalography (EEG), we investigated neural activity when subjects with no professional experience in art viewed images of sculptures (masterpieces from the Classical and Renaissance periods, characterized by a canonical proportion of the golden ratio) and performed a five-scale rating of how appealing they were. At the beginning of each trial, we manipulated the expectations of the subjects for an upcoming sculpture by presenting information about its authenticity (either “genuine” or “fake”), although all images were actually taken from genuine artworks. The image of the sculpture was then presented, either in its original proportion or after being deformed by a photo-editing software. This 2 × 2 factorial design enabled us to identify whether each component of the EEG response was sensitive to contextual information (genuine or fake), visual information (original or deformed), or both. Results revealed that amplitudes of a positive EEG component emerging at 200–300ms after the presentation of the artworks (mainly distributed over the parietal cortex) were significantly modulated by both visual and contextual factors, indicating a rapid integration of these two types of information in the brain.