Right temporopolar activation associated with unique perception
Right temporopolar activation associated with unique perception
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DOI：
10.1016/j.neuroimage.2008.01.059
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发表时间：
2008-05-15
期刊：
影响因子：
5.7
通讯作者：
Miyashita, Yasushi
中科院分区：
文献类型：
--
作者：
Asari, Tomoki;Konishi, Seiki;Miyashita, Yasushi
独特的感知模式，或与他人不同的看待事物的能力，是创造性心理活动所需的心理资源之一。使用模糊的视觉刺激的行为研究已经成功地诱导了不同的反应，从受试者，并在这种模式中定义的独特的反应，观察到在艺术人口的频率较高，相比nonarticulate人口。然而，这种独特感知的神经基础还有待研究。在本研究中，10个模糊图形被用作刺激。受试者被要求说出功能性MRI扫描期间的数字。根据独立的年龄和性别匹配的对照组中相同反应的出现频率，将反应分为“频繁”、“罕见”或“独特”反应。一项对比独特反应和频繁反应的事件相关分析显示，右颞极的激活最大，在整个大脑的多重比较中幸存下来。还进行了另一种参数调制分析，以表明来自视觉刺激差异的潜在混淆感知效应对这种颞极激活没有显着贡献。以往的神经影像学和神经心理学研究表明，颞极参与知觉情绪联系。因此，我们的研究结果表明，独特的知觉是由知觉和情感过程的整合产生的，这种整合可能是创造性心理活动的重要组成部分。(c)2008年由Elsevier Inc.出版
Unique mode of perception, or the ability to see things differently from others, is one of the psychological resources required for creative mental activities. Behavioral studies using ambiguous visual stimuli have successfully induced diverse responses from subjects, and the unique responses defined in this paradigm were observed in higher frequency in the artistic population as compared to the nonartistic population. However, the neural substrates that underlie such unique perception have yet to be investigated. In the present study, ten ambiguous figures were used as stimuli. The subjects were instructed to say what the figures looked like during functional MRI scanning. The responses were classified as "frequent", "infrequent" or "unique" responses based on the appearance frequency of the same response in an independent age-and gender-matched control group. An event-related analysis contrasting unique vs. frequent responses revealed the greatest activation in the right temporal pole, which survived a whole brain multiple comparison. An alternative parametric modulation analysis was also performed to show that potentially confounding perceptual effects deriving from differences in visual stimuli make no significant contribution to this temporopolar activation. Previous neuroimaging and neuropsychological studies have shown the involvement of the temporal pole in perception emotion linkage. Thus, our results suggest that unique perception is produced by the integration of perceptual and emotional processes, and this integration might underlie essential parts of creative mental activities. (c) 2008 Published by Elsevier Inc.