Shergill S S, Tracy D K, Seal M, Rubia K, McGuire P
CSI Lab, Institute of Psychiatry, Kings College London, UK.
Neuropsychologia. 2006;44(12):2573-7. doi: 10.1016/j.neuropsychologia.2006.04.005. Epub 2006 May 30.
Timing is an important constituent of speech and language. Different brain regions have been associated with time management functions such as time estimation and motor timing. This study aims to identify the less well known neural networks associated with timing of internally paced covert articulation. Functional MRI was performed on subjects who either spontaneously, or in response to a visual cue, covertly generated words every 2 s. Results show the involvement of anterior cingulate gyrus, right dorsolateral and inferior frontal and right inferior parietal cortices in a putatively modality independent circuit associated with timing of covert speech. Modality specific activation in the right temporal cortex may have reflected the involvement of this region in auditory-verbal processing.
时间是言语和语言的一个重要组成部分。不同的脑区与诸如时间估计和运动定时等时间管理功能相关联。本研究旨在识别与内部节奏的隐蔽发音定时相关的鲜为人知的神经网络。对那些自发地或响应视觉提示每2秒隐蔽地生成单词的受试者进行了功能磁共振成像。结果显示，前扣带回、右侧背外侧和额下回以及右侧顶下皮质参与了一个与隐蔽言语定时相关的假定模态独立回路。右侧颞叶皮质的模态特异性激活可能反映了该区域参与听觉言语加工。
