Miyamoto A, Wilson G F
Department of Hygiene, Nihon University School of Medicine, Tokyo, Japan.
Aviat Space Environ Med. 1991 Jul;62(7):638-47.
Visual evoked fields (VEFs) were measured in four subjects, using magnetoencephalography (MEG) and a flashed checkerboard pattern stimulation with a duration of 20 ms. The left hemisphere was searched for the primary and the secondary projection areas with a full-field stimulus. Typical VEFs were found in the occipital area, which is considered to be the primary projection; and a secondary projection area was found in the dorsal temporal area in all subjects. The negative VEF in the secondary projection area was robust and stable, with a range of latencies from 200 to 230 ms. The amplitude was more than -400 femtotesla (fT), as high as the VEF in the occipital area. However, we were unable to localize the position of a dipole, since only one amplitude maxima was found.
使用脑磁图（MEG）和持续时间为20毫秒的闪烁棋盘格图案刺激，对四名受试者测量了视觉诱发电场（VEF）。用全视野刺激在左半球寻找初级和次级投射区域。在枕叶区域发现了典型的VEF，该区域被认为是初级投射区；在所有受试者的颞叶背侧区域发现了一个次级投射区。次级投射区的负向VEF稳健且稳定，潜伏期范围为200至230毫秒。其幅度超过-400飞特斯拉（fT），与枕叶区域的VEF一样高。然而，由于只发现了一个幅度最大值，我们无法确定偶极子的位置。
