人类体感皮层第一感觉区（SI）和第二感觉区（SII）诱发的体感脑磁场。
Somatosensory evoked cerebral magnetic fields from SI and SII in man.
作者信息
Hari R, Reinikainen K, Kaukoranta E, Hämäläinen M, Ilmoniemi R, Penttinen A, Salminen J, Teszner D
出版信息
Electroencephalogr Clin Neurophysiol. 1984 Mar;57(3):254-63. doi: 10.1016/0013-4694(84)90126-3.
We have recorded cerebral magnetic fields elicited by electrical stimulation of median and peroneal nerves. Field mapping indicates that the deflections at 30-80 and 150-180 msec are due to activity at SI. Additional activity at 90-125 msec is generated at SII, on the superior bank of the sylvian fissure. At SI, the source locations are in agreement with the known somatotopy. Only contralateral stimuli evoke responses at SI, whereas both ipsi- and contralateral stimuli elicit responses at SII.
我们记录了通过电刺激正中神经和腓神经所诱发的脑磁场。磁场绘图表明，30 - 80毫秒和150 - 180毫秒时的偏转是由于初级体感皮层（SI）的活动所致。90 - 125毫秒时的额外活动是在外侧裂上缘的次级体感皮层（SII）产生的。在初级体感皮层，源位置与已知的躯体定位一致。只有对侧刺激能在初级体感皮层诱发反应，而同侧和对侧刺激均可在次级体感皮层诱发反应。
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