Kakigi R, Koyama S, Hoshiyama M, Kitamura Y, Shimojo M, Watanabe S, Nakamura A
Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan.
Neuroreport. 1996 Jan 31;7(2):405-8. doi: 10.1097/00001756-199601310-00007.
Tactile stimulation of the hand interferes with somatosensory evoked brain responses following electrical median nerve stimulation. This effect was studied in eight normal subjects by magnetonecephalography (MEG). When stimulation was applied to the hand ipsilateral to the stimulated nerve, only the third response (3M) was enhanced in five subjects, but other responses were attenuated in all subjects. These interference effects were probably due to interactions in areas 3b and 1. After stimulation of the contralateral hand, only the second response (2M) was enhanced in six subjects. This effect was probably due to the intracerebral interactions mediated through the corpus callosum.
手部的触觉刺激会干扰正中神经电刺激后体感诱发的脑反应。本研究通过脑磁图（MEG）对8名正常受试者进行了此项效应的研究。当刺激施加于与受刺激神经同侧的手部时，5名受试者仅第三个反应（3M）增强，但所有受试者的其他反应均减弱。这些干扰效应可能是由于3b区和1区的相互作用。对侧手部刺激后，6名受试者仅第二个反应（2M）增强。这种效应可能是由于通过胼胝体介导的脑内相互作用。
