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后外侧颞叶皮层在动词语义加工中的作用
Project Number31300842
林楠
Subtype青年科学基金项目
Project Source国家自然科学基金
Project Level国家级项目
2013-12-31
End Date2016-12-30
Abstract动词是人类语言所共有的基本语法类别之一,也是语义记忆研究中的重要材料。然而,人们对动词语义加工的脑机制仍知之甚少。根据现有证据,研究者们普遍认为后外侧颞叶皮层是负责动词语义加工的关键脑区之一,并假设该脑区的功能与对动词的运动信息和逻辑结构的加工有关。本项目将通过两方面的研究对后外侧颞叶皮层在动词语义加工中的作用给出新的启示。第一,我们将考察被以往研究所忽视的一类动词语义信息--社会性语义信息对后外侧颞叶皮层激活的影响。第二,我们将建立动词语义特征与后外侧颞叶皮层激活模式间的映射模型,并通过考察模型对动词刺激的预测能力对其可靠性加以评估。我们预期,本项目将可对后外侧颞叶皮层在动词语义加工中的作用给出新颖、系统的阐释,并在一定程度上揭示语义加工过程中的神经活动规律。
Other AbstractVerbs exist in all human languages and are important materials for studies of semantic memory. However, the brain mechanisms underlying verb semantic processing are still poorly understood. The posterior lateral temporal cortex (PLTC) is widely believed to play an important role in verb understanding. It has been assumed that PLTC is in charge of processing motion knowledge and logical structures of verbs. This project will provide new insight into the function of PLTC by conducting two sets of research. First, we will investigate whether the social semantic information of verbs, which has been largely overlooked by previous studies, modulates PLTC activation. Second, we will build computational models that can map PLTC activation to verb semantic features and make predictions about the verbs being thought of. We expect that this project will shed new light on the role of PLTC in verb semantic processing and improve our understanding of the regularities underlying neural processing of meaning.

Keyword动词 语义 社会性 表象性 fMRI
Other Keywordverb ; semantic ; sociality ; imageability ; fMRI
Project Funding20
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Project Intro.本项目采用功能磁共振技术考察了动词语义加工中后外侧颞叶皮层及其他脑区的激活模式。在一系列研究中,我们分析了动词语义的社会性、表象性、精细动作信息、论元结构信息以及任务难度对脑激活的影响。我们发现,后外颞叶侧皮层在动词语义加工中的激活受到社会性和表象性两个维度调控,而未发现支持其他维度和因素(如动词论元结构、任务难度)的调控作用。我们还发现了其他脑区在词汇加工中的作用:前运动区在精细动作语义信息加工中起作用;顶下小叶和扣带后回参与了词汇识别。我们的发现提示:颞叶后外侧皮层及相邻顶叶脑区在动词的社会性语义加工和感觉运动语义加工中都起到了重要作用,且是社会性语义子系统和感觉运动语义子系统的连接点。本项目的发现深化了我们对动词语义加工脑机制的理解,反映了语义系统的细化组织结构。
Document Type项目
Identifierhttp://ir.psych.ac.cn/handle/311026/30288
Collection认知与发展心理学研究室
Affiliation中国科学院心理研究所
First Author AffilicationInstitute of Psychology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
林楠.后外侧颞叶皮层在动词语义加工中的作用.2013.
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