In the non-invasive magnetic nerve stimulation of human brain, the coil of figure 「8」 is mostly used. The peak maximum is corresponding to the center of the coil, and the negative peak value is corresponding to the twain edges of the coil, the latter one is apt to cause abnormal nerve excitation.
在无创性脑神经磁刺激技术中 ,多采用 8字形磁刺激线圈 ,在线圈周围一定距离的空间中 ,对应 8字线圈中心出现感应电场最大值 ,对应两外边缘处出现反向感应电场峰值 ,后者容易在刺激目标处产生副刺激。