FUNCTIONAL MAGNETIC-RESONANCE-IMAGING OF MOTOR CORTEX - HEMISPHERIC-ASYMMETRY AND HANDEDNESS
FUNCTIONAL MAGNETIC-RESONANCE-IMAGING OF MOTOR CORTEX - HEMISPHERIC-ASYMMETRY AND HANDEDNESS
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DOI：
10.1126/science.8342027
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发表时间：
1993-07-30
期刊：
影响因子：
56.9
通讯作者：
GEORGOPOULOS, AP
中科院分区：
文献类型：
--
作者：
KIM, SG;ASHE, J;GEORGOPOULOS, AP
在对侧(C)和同侧(I)手指运动时，人类运动皮层的功能激活半球不对称，特别是在右撇子受试者中，用高场强（4特斯拉）的核磁共振成像记录了这一点。而右撇子（C/I平均激活面积= 36.8）和左撇子（C/I = 29.9）受试者的左运动皮层在对侧手指运动时大多被激活，而左撇子受试者的左运动皮层在同侧运动时被大量激活（C/I = 5.4），而右撇子受试者的左运动皮层在同侧运动时被激活（C/I = 1.3）更多。
A hemispheric asymmetry in the functional activation of the human motor cortex during contralateral (C) and ipsilateral (I) finger movements, especially in right-handed subjects, was documented with nuclear magnetic resonance imaging at high field strength (4 tesla). Whereas the right motor cortex was activated mostly during contralateral finger movements in both right-handed (C/I mean area of activation = 36.8) and left-handed (C/I = 29.9) subjects, the left motor cortex was activated substantially during ipsilateral movements in left-handed subjects (C/I = 5.4) and even more so in right-handed subjects (C/I = 1.3).