Chertkow H, Murtha S
Department of Neurology and Neurosurgery at McGill University, Montreal, Canada.
Clin Neurosci. 1997;4(2):78-86.
Brain activation studies using positron emission tomography (PET) to study language have produced a breakthrough in our understanding of the neural basis of language over the past decade. A neural basis for the visual lexicon and for auditory verbal short term memory components have been proposed. Wernicke's and Broca's areas are being recast in terms of localized components of phonological input and output. Some classical regions, such as the arcuate fasciculus, are having their "classical" roles questioned, while other regions, such as the basal temporal language zone, are growing progressively in terms of their recognized importance. Finally, other areas, such as the anterior cingulate and the left inferior prefrontal area, seem to be activated across a range of tasks, but their exact processing roles remain a matter of some debate.
在过去十年中，使用正电子发射断层扫描（PET）研究语言的大脑激活研究在我们对语言神经基础的理解上取得了突破。已经提出了视觉词汇和听觉言语短期记忆成分的神经基础。韦尼克区和布洛卡区正在根据语音输入和输出的局部成分进行重新诠释。一些经典区域，如弓状束，其“经典”作用受到质疑，而其他区域，如颞叶基底语言区，其公认的重要性正在逐渐增加。最后，其他区域，如前扣带回和左前额叶下部区域，似乎在一系列任务中都会被激活，但其确切的处理作用仍存在一些争议。
