梭状回后部书面文字的类别相关激活具有任务特异性。
Category-related activation for written words in the posterior fusiform is task specific.
作者信息
Devlin Joseph T, Rushworth Matthew F S, Matthews Paul M
机构信息
Centre for Functional Magnetic Resonance Imaging of the Brain, Department of Clinical Neurology, John Radcliffe Hospital, University of Oxford, Headley Way, Headington, Oxford OX3 9DU, UK.
出版信息
Neuropsychologia. 2005;43(1):69-74. doi: 10.1016/j.neuropsychologia.2004.06.013.
Abstract
Category-related brain activations have been reported in the posterior fusiform gyri when people view pictures of tools and animals, but only a single study has observed this pattern when the stimuli were words, rather than pictures. Here we replicate these category effects with words and provide evidence that distinctive patterns of activation are task specific. The results suggest that category-related activation in the posterior fusiform gyri can be driven either "bottom-up" by visual processing of images or "top-down" by word processing.
摘要
据报道，当人们观看工具和动物的图片时，梭状回后部会出现与类别相关的大脑激活，但只有一项研究观察到当刺激物是单词而非图片时也存在这种模式。在这里，我们用单词复制了这些类别效应，并提供证据表明激活的独特模式是特定于任务的。结果表明，梭状回后部与类别相关的激活可以由图像的视觉处理“自下而上”驱动，也可以由单词处理“自上而下”驱动。
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