Medical Research Council, Cognition and Brain Sciences Unit, 15 Chaucer Road, Cambridge, CB2 2EF, UK.
Nat Rev Neurosci. 2010 May;11(5):351-60. doi: 10.1038/nrn2811. Epub 2010 Apr 9.
Action and perception are functionally linked in the brain, but a hotly debated question is whether perception and comprehension of stimuli depend on motor circuits. Brain language mechanisms are ideal for addressing this question. Neuroimaging investigations have found specific motor activations when subjects understand speech sounds, word meanings and sentence structures. Moreover, studies involving transcranial magnetic stimulation and patients with lesions affecting inferior frontal regions of the brain have shown contributions of motor circuits to the comprehension of phonemes, semantic categories and grammar. These data show that language comprehension benefits from frontocentral action systems, indicating that action and perception circuits are interdependent.
动作和感知在大脑中是功能相连的，但一个备受争议的问题是感知和理解刺激是否依赖于运动回路。大脑语言机制非常适合解决这个问题。神经影像学研究发现，当受试者理解语音、词义和句子结构时，会出现特定的运动激活。此外，涉及经颅磁刺激和大脑下额叶区域受损的研究表明，运动回路有助于语音、语义类别和语法的理解。这些数据表明，语言理解受益于额中央动作系统，这表明动作和感知回路是相互依存的。
