Luo Jing, Niki Kazuhisa
Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing.
Hippocampus. 2002;12(4):487-94. doi: 10.1002/hipo.10027.
The role of medial temporal lobe (MTL) in deep semantic processing was examined in a triple semantic judgment task in which subjects were asked to decide which one of the two bottom words was more semantically fit to the top word. By changing the number of bottom words that are semantically related to the top word, we can disassociate effects of reactivating the "old" semantic associations and effects of establishing "new" semantic associations on the MTL. The results of event-related fMRI analysis indicated that MTL was more activated in the retrieval of old semantic associations than in the establishment of new semantic associations. The function of MTL in this semantic judgment task was explained as subserving the process of extensive retrieval of task-related knowledge.
在内侧颞叶（MTL）在深度语义加工中的作用研究中，开展了一项三重语义判断任务，要求受试者判断两个底部单词中哪一个在语义上更适合顶部单词。通过改变与顶部单词语义相关的底部单词数量，我们可以区分重新激活“旧”语义关联的效应和在MTL上建立“新”语义关联的效应。事件相关功能磁共振成像分析结果表明，MTL在旧语义关联的检索中比在新语义关联的建立中激活程度更高。MTL在这项语义判断任务中的功能被解释为有助于广泛检索任务相关知识的过程。
