Hirano S, Kojima H, Naito Y, Honjo I, Kamoto Y, Okazawa H, Ishizu K, Yonekura Y, Nagahama Y, Fukuyama H, Konishi J
Department of Hearing and Speech Sciences, Graduate School of Medicine, Kyoto University, Japan.
Neuroreport. 1997 Jul 7;8(9-10):2379-82. doi: 10.1097/00001756-199707070-00055.
To investigate the relationship between motor and sensory speech center, cortical activity was examined using PET while normal subjects perceived their own voice which sounded different to the articulated one. The results showed significant activation in the superior temporal gyri with absence of activity in the supplementary motor area (SMA). In a previous study we found significant activation in SMA with no activity in the superior temporal gyrus when normal subjects simply vocalized. Thus, two different cortical pathways for vocalization were delineated: programmed pathway in SMA, and pathway with auditory verbal feedback. The former is thought to be the mature system in the adult, and the latter may be related to speech acquisition.
为了研究运动性和感觉性言语中枢之间的关系，在正常受试者感知自己听起来与清晰发音不同的声音时，使用正电子发射断层扫描（PET）检查了皮质活动。结果显示颞上回有明显激活，而辅助运动区（SMA）无活动。在先前的一项研究中，当正常受试者简单发声时，我们发现SMA有明显激活，而颞上回无活动。因此，描绘出了两条不同的发声皮质通路：SMA中的程序化通路和有听觉言语反馈的通路。前者被认为是成年人的成熟系统，后者可能与言语习得有关。
