Role of anterior temporal cortex in auditory sentence comprehension: an fMRI study
Role of anterior temporal cortex in auditory sentence comprehension: an fMRI study
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DOI：
10.1097/00001756-200106130-00046
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发表时间：
2001-06-13
期刊：
影响因子：
1.7
通讯作者：
Hickok, G
中科院分区：
文献类型：
--
作者：
Humphries, C;Willard, K;Hickok, G
最近的神经心理学和功能成像证据表明，前颞叶皮层在句子水平的理解中起作用。我们使用事件相关功能磁共振成像来探索这一假设。研究人员对受试者进行扫描，同时让他们听描述某一事件的一系列环境声音，或者听意义尽可能接近的相应句子。这两种类型的刺激都要求受试者随着时间的推移整合听觉信息以获得相似的含义，但导致信息整合的处理机制不同，语音输入需要句法机制，而环境声音利用非语言机制。与最近的说法一致，句子比环境声音在双侧颞叶前部产生更大的激活。在左侧后颞上区也发现了类似的语音激活模式。环境声音比句子在右侧额下回产生更大的激活。这一结果支持了前颞叶皮层在句子水平理解中起重要作用的观点。(C) 2001 Lippincott Williams & Wilkins。
Recent neuropsychological and functional imaging evidence has suggested a role for anterior temporal cortex in sentence-level comprehension. We explored this hypothesis using event-related fMRI. Subjects were scanned while they listened to either a sequence of environmental sounds describing an event or a corresponding sentence matched as closely as possible in meaning. Both types of stimuli required subjects to integrate auditory information over time to derive a similar meaning, but differ in the processing mechanisms leading to the integration of that information, with speech input requiring syntactic mechanisms and environmental sounds utilizing non-linguistic mechanisms. Consistent with recent claims, sentences produced greater activation than environmental sounds in anterior superior temporal lobe bilaterally. A similar speech>sound activation pattern was noted also in posterior superior temporal regions in the left. Envirornmental sounds produced greater activation than sentences in right inferior frontal gyrus. The results provide support for the view that anterior temporal cortex plays an important role in sentence-level comprehension. NeuroReport 12:1749-1752 (C) 2001 Lippincott Williams & Wilkins.