Motor planning center for speech articulation in the normal human brain.
Motor planning center for speech articulation in the normal human brain.
复制标题
正常人脑中言语发音的运动规划中心。
作者：
S. Kuriki;Takeshi Mori;Y. Hirata
为了定位正常人脑优势半球语言运动的协调中心，我们测量了右利手受试者发音不同时左侧额区的脑磁图信号。广谱反应出现在发声前120~320ms，其电流偶极子源位于左侧脑岛上端周围的磁共振图像上。此外，脑磁图反应的开始大约比口周肌肉活动早100毫秒，这是因为发音时的发音。这些结果表明，额叶深部参与了语音运动的发音程序设计。
In order to locate the coordination center of speech movements in the dominant hemisphere of the normal human brain, we measured magnetoencephalographic (MEG) signals from the left frontal area of right-handed subjects while they pronounced different words. A broad response appeared during a period of 120-320 ms before the onset of speech sound, and its current dipole sources were localized on the magnetic resonance images in a region around the superior end of the left insula. Further, the onset of the MEG response preceded by about 100 ms the perioral muscle activities that occurred for the articulation in speaking the words. These results suggest that the deep frontal region is involved in the articulatory programming of speech movements.