Ugawa Y, Hanajima R, Kanazawa I
Department of Neurology, University of Tokyo, Japan.
Neurosci Lett. 1993 Oct 1;160(2):153-5. doi: 10.1016/0304-3940(93)90401-6.
We investigated interaction of the human bilateral hand motor area using two magnetic stimulators. A conditioning shock over the motor cortex facilitated the response evoked in the ipsilateral first dorsal interosseous muscle by a test shock over the contralateral motor cortex given under the limiting conditions of a small conditioning shock over a very small area and a small test shock. This effect was so weak that it was not elicited under slightly different conditions. We conclude that an excitatory, but weak, connection between strictly homotopic areas of the bilateral hand motor cortices exists in humans.
我们使用两个磁刺激器研究了人类双侧手部运动区的相互作用。在运动皮层施加的条件性刺激，在非常小的区域施加小的条件性刺激和小的测试性刺激的极限条件下，促进了对侧运动皮层的测试性刺激诱发的同侧第一背侧骨间肌的反应。这种效应非常微弱，在稍有不同的条件下就不会出现。我们得出结论，人类双侧手部运动皮层的严格同位区域之间存在兴奋性但微弱的连接。
