Rossini P M, Deuschl G, Pizzella V, Tecchio F, Pasquarelli A, Feifel E, Romani G L, Lücking C H
Divisione di Neurologia, Ospedale "Fatebenefratelli," Rome, Italy.
Electroencephalogr Clin Neurophysiol. 1996 May;100(3):229-39. doi: 10.1016/0168-5597(95)00275-8.
SEPs and SEFs after air-puff stimulation of index and little fingers have been studied and compared to the responses following electrical stimulation of the same digits and of the median nerve at the wrist in 5 subjects. The differences in morphology of the evoked signals are described and the generator characteristics are analysed for SEFs by means of a moving dipole model inside a homogeneous sphere. In our measurements the magnetic fields following electrical finger stimulation show a 30 msec component, which was absent following air-puff stimulation. This could not be seen in the electric field activity. The generators of the first component of SEFs after air-puff finger stimulation proved to be deeper (8 mm on average across all subjects and for both fingers) than in the case of electrically evoked SEFs. A similar behaviour was also observed for the second component of SEFs for the 2 stimulus modalities.
在5名受试者中，研究并比较了对示指和小指进行吹气刺激后体感诱发电位（SEP）和体感诱发磁场（SEF），以及对相同手指和腕部正中神经进行电刺激后的反应。描述了诱发信号形态的差异，并通过均匀球体内部的移动偶极子模型分析了SEF的发生器特征。在我们的测量中，电刺激手指后产生的磁场显示出一个30毫秒的成分，而吹气刺激后该成分不存在。这在电场活动中无法看到。吹气刺激手指后SEF第一个成分的发生器比电诱发SEF的情况更深（所有受试者和两根手指平均为8毫米）。对于两种刺激方式的SEF第二个成分，也观察到了类似的情况。
