Zimmerman J T, Reite M, Zimmerman J E
Electroencephalogr Clin Neurophysiol. 1981 Aug;52(2):151-6. doi: 10.1016/0013-4694(81)90162-0.
Magnetic auditory evoked fields (MAEFs) were recorded from the left hemisphere of 7 normal human subjects in response to 512 binaural click stimuli. The instrument was a figure-eight SQUID gradiometer that measured the transverse gradient of the field perpendicular to the scalp. Its response to a current dipole source inside the head was a cosine function of the angular orientation of the gradiometer about an axis perpendicular to the scalp. Measurements were made at various orientations from which were derived the orientation of the equivalent dipole source. Our findings suggest that when considering total magnetic energy, current dipoles in the vicinity of the transverse gyri of Heschl, whose primary orientation are approximately perpendicular to the sylvian fissure, appear to be the major contributors to the magnetic fields produced by click stimuli.
对7名正常人类受试者的左半球记录了磁听觉诱发电场（MAEFs），以响应512次双耳点击刺激。仪器是一个八字形超导量子干涉装置梯度计，用于测量垂直于头皮的场的横向梯度。它对头部内部电流偶极子源的响应是梯度计围绕垂直于头皮的轴的角取向的余弦函数。在不同取向进行测量，由此得出等效偶极子源的取向。我们的研究结果表明，在考虑总磁能时，位于Heschl横回附近、其主要取向大致垂直于外侧裂的电流偶极子似乎是点击刺激产生的磁场的主要贡献者。
