American Clinical Magnetoencephalography Society Clinical Practice Guideline 2: Presurgical Functional Brain Mapping Using Magnetic Evoked Fields
American Clinical Magnetoencephalography Society Clinical Practice Guideline 2: Presurgical Functional Brain Mapping Using Magnetic Evoked Fields
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DOI：
10.1097/wnp.0b013e3182272ffe
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发表时间：
2011-08-01
影响因子：
2.4
通讯作者：
Bagic, Anto I.
中科院分区：
文献类型：
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作者：
Burgess, Richard C.;Funke, Michael E.;Bagic, Anto I.
背景语言刺激的听觉或视觉呈现除了导致初级听觉和视觉反应（早期反应）外，还导致与语言相关的反应（迟发反应）。听觉诱发磁场（LEF）出现在初级感觉成分之后，并且在大脑的语言相关区域中产生，而不管刺激呈现的方式如何。脑电诱发的磁场是可重复的。语言区的偏侧性，如MEG所测量的，已被发现与Wada程序和颅内记录期间的映射的结果在80%和95%之间相关。接受性语言（理解）的听觉诱发磁场研究将源定位于上级和中颞叶以及颞顶交界处的后部，而表达性语言（言语产生）的LEF研究将活动定位于额叶和基底颞区。
BackgroundLinguistic stimuli presented acoustically or visually result in language-related responses (late responses) in addition to primary auditory and visual responses (early responses). Language-evoked magnetic fields (LEFs) appear after the primary sensory components and are generated in language-related areas of the brain regardless of the modality of stimulus presentation. Language-evoked magnetic fields are repeatable. Laterality of the language areas, as measured by MEG, has been found to correlate between 80% and 95% with results from the Wada procedure and mapping during intracranial recordings. Language-evoked magnetic field studies of receptive language (comprehension) localize sources to the posterior aspects of the superior and middle temporal lobe and the temporoparietal junction, whereas LEF studies of expressive language (speech production) localize activity in frontal and basal temporal areas.