Hargreaves Ian S, Leonard Gemma A, Pexman Penny M, Pittman Daniel J, Siakaluk Paul D, Goodyear Bradley G
Department of Psychology, University of Calgary, Calgary AB, Canada.
Front Hum Neurosci. 2012 Feb 16;6:22. doi: 10.3389/fnhum.2012.00022. eCollection 2012 Jan 24.
The semantic richness dimension referred to as body-object interaction (BOI) measures perceptions of the ease with which people can physically interact with words' referents. Previous studies have shown facilitated lexical and semantic processing for words rated high in BOI, e.g., belt, than for words rated low in BOI, e.g., sun. These BOI effects have been taken as evidence that embodied information is relevant to word recognition (Siakaluk et al., 2008a). However, to date there is no evidence linking BOI manipulations to differences in the utilization of perceptual or sensorimotor areas of the brain. The current study used event-related functional magnetic resonance imaging (fMRI) to examine the neural correlates of BOI in a semantic categorization task (SCT). Sixteen healthy adults participated. Results showed that high BOI words were associated with activation in the left inferior parietal lobule (supramarginal gyrus, BA 40), a sensory association area involved in kinesthetic memory. These results provide evidence that the BOI dimension captures the relative availability of sensorimotor information, and that this contributes to semantic processing.
被称为身体-物体互动（BOI）的语义丰富度维度衡量的是人们与单词所指对象进行身体互动的难易程度的感知。先前的研究表明，对于在BOI方面评分高的单词，如“belt”（腰带），其词汇和语义处理比在BOI方面评分低的单词，如“sun”（太阳）更容易。这些BOI效应被视为具身信息与单词识别相关的证据（西亚卡卢克等人，2008年a）。然而，迄今为止，尚无证据将BOI操作与大脑感知或感觉运动区域利用的差异联系起来。当前的研究使用事件相关功能磁共振成像（fMRI）来检查语义分类任务（SCT）中BOI的神经关联。16名健康成年人参与了研究。结果表明，高BOI单词与左侧下顶叶小叶（缘上回，BA 40）的激活有关，该区域是一个参与动觉记忆的感觉关联区域。这些结果提供了证据，表明BOI维度捕捉了感觉运动信息的相对可用性，并且这有助于语义处理。
