Hoshiyama M, Kakigi R, Koyama S, Kitamura Y, Shimoio M, Watanabe S
Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan.
Neurosci Lett. 1995 Jul 28;195(1):29-32. doi: 10.1016/0304-3940(95)11771-n.
Somatosensory evoked magnetic fields after mechanical stimulation by air-pressure-induced tapping which was applied to the forehead and occiput were examined in normal human subjects. The equivalent current dipole (ECD) of the initial magnetic field, 1M, was identified in the primary somatosensory cortex (SI) in the hemisphere contralateral to the stimulation. The ECD of the subsequent magnetic fields, 2M, was identified in bilateral second sensory cortices (SII). The ECD position of 1M in SI generated after the scalp stimulation was closely inferior to the hand area of the SI, which was consistent with the well-known somatotopic organization, 'homunculus'.
在正常人类受试者中，研究了通过气压诱导轻敲对额头和枕部进行机械刺激后体感诱发磁场。在刺激对侧半球的初级体感皮层（SI）中识别出初始磁场1M的等效电流偶极子（ECD）。随后磁场2M的ECD在双侧第二感觉皮层（SII）中被识别出来。头皮刺激后在SI中产生的1M的ECD位置紧邻SI的手部区域下方，这与著名的躯体定位组织“小人儿”一致。
