Localization of the motor hand area to a knob on the precentral gyrus - A new landmark
Localization of the motor hand area to a knob on the precentral gyrus - A new landmark
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DOI：
10.1093/brain/120.1.141
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发表时间：
1997-01-01
期刊：
影响因子：
14.5
通讯作者：
Winkler, P
中科院分区：
文献类型：
--
作者：
Yousry, TA;Schmid, UD;Winkler, P
使用功能磁共振成像（fMRI），我们已经评估了运动手区的解剖位置。最常包含运动手功能的中央前回区段是旋钮状结构，其在轴向平面上的形状像Ω或Ω，在矢状平面上的形状像钩。在尸体标本的皮质表面上，这个中央前球与中央沟的特征性“中膝”完全对应，这在上世纪被许多解剖学家描述过。因此，我们可以证明这个旋钮是直接识别中央前回的可靠标志。因此，我们的结论是，参与运动的手功能的神经元位于一个特征性的“中央前旋钮”，这是一个可靠的地标，用于识别正常和病理条件下的中央前回。它面对并形成中央沟的“中膝”，正好位于中央前沟和中央沟之间的交叉点，因此在皮质表面上也是可见的。
Using functional magnetic resonance imaging (fMRI) we have evaluated the anatomical location of the motor hand area. The segment of the precentral gyrus that most often contained motor hand function was a knob-like structure, that is shaped like an omega or epsilon in the axial plane and like a hook in the sagittal plane. On the cortical surface of cadaver specimens this precentral knob corresponded precisely to the characteristic 'middle knee' of the central sulcus that has been described by various anatomists in the last century. We,ere then able to show that this knob is a reliable landmark for identifying the precentral gyrus directly. We therefore conclude that neural elements involved in motor hand function are located in a characteristic 'precentral knob' which is a reliable landmark for identifying the precentral gyrus under normal and pathological conditions. It faces and forms the 'middle knee' of the central sulcus, is located just at the cross point between the precentral sulcus and the central sulcus, and is therefore also visible on the cortical surface.