Neural correlates of object indeterminacy in art compositions
Neural correlates of object indeterminacy in art compositions
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DOI：
10.1016/j.concog.2007.07.005
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发表时间：
2008-09-01
影响因子：
2.4
通讯作者：
Ishai, Alumit
中科院分区：
文献类型：
--
作者：
Fairhall, Scott L.;Ishai, Alumit
不确定的艺术引发了一种感知困境，其中明显细致而生动的图像难以识别。我们使用事件相关的功能磁共振成像来研究具象、不确定和抽象绘画的视觉感知。我们假设随着物体分辨率的增加，沿着从后到前的腹侧视觉区域的梯度激活增加，并假设物体分辨率将与视觉图像相关。在行为上，受试者在具象绘画中比在不确定绘画和抽象绘画中更快地识别熟悉的物体。我们发现分布式皮质网络内的激活包括视觉、顶叶、边缘和前额叶区域。具象绘画描绘的场景中混杂着熟悉的物体，在较高层次的视觉区域中比不确定和抽象的绘画更能引起更强的激活。对乱序绘画的感知与楔前叶和前额叶皮层的意象相关激活有关。最后，具象绘画比不确定绘画在颞顶交界处引起更强的激活。我们的研究结果表明，对艺术作品中熟悉内容的感知是通过对象识别、记忆回忆和心理意象以及在分布式皮层网络中激发激活的认知过程来调节的。 (C) 2007 Elsevier Inc. 保留所有权利。
Indeterminate art invokes a perceptual dilemma in which apparently detailed and vivid images resist identification. We used event-related fMRI to study visual perception of representational, indeterminate and abstract paintings. We hypothesized increased activation along a gradient of posterior-to-anterior ventral visual areas with increased object resolution, and postulated that object resolution would be associated with visual imagery. Behaviorally, subjects were faster to recognize familiar objects in representational than in both indeterminate and abstract paintings. We found activation within a distributed cortical network that includes visual, parietal, limbic and prefrontal regions. Representational paintings, which depict scenes cluttered with familiar objects, evoked stronger activation than indeterminate and abstract paintings in higher-tier visual areas. Perception of scrambled paintings was associated with imagery-related activation in the precuneus and prefrontal cortex. Finally, representational paintings evoked stronger activation than indeterminate paintings in the temporoparietal junction. Our results suggest that perception of familiar content in art works is mediated by object recognition, memory recall and mental imagery, cognitive processes that evoke activation within a distributed cortical network. (C) 2007 Elsevier Inc. All rights reserved.