Scheuneman D, Teale P, Linnville S, Goldstein L, Reite M
Department of Psychiatry, University of Colorado Health Sciences Center, Denver 80262.
Brain Res Bull. 1991 May;26(5):747-51. doi: 10.1016/0361-9230(91)90170-o.
We recorded magnetoencephalographic auditory evoked fields from the left and right hemispheres of six normal adult female subjects, in response to unattended tone pips. Magnetic field data was used to estimate location, orientation, depth, and strength of the 100-ms latency evoked field component (M100). M100 source locations did not significantly differ in left and right hemispheres. Previous studies in six normal males demonstrated M100 sources to be significantly further anterior in the right hemisphere. Compared to the previously reported male subjects, M100 sources in the right hemisphere of these females were significantly further posteriorly, by a mean value of 2.1 cm. These findings, while preliminary, support sex-related functional and/or structural differences in the superior temporal lobe, and would be compatible with the female right temporal planum extending further posteriorly. They suggest MEG recordings may be a useful addition to studies of sex-related difference in brain function and/or structure.
我们记录了6名正常成年女性受试者左、右半球的脑磁图听觉诱发电场，以响应未被注意的短纯音。磁场数据用于估计100毫秒潜伏期诱发电场成分（M100）的位置、方向、深度和强度。M100源位置在左、右半球无显著差异。之前对6名正常男性的研究表明，M100源在右半球明显更靠前。与之前报道的男性受试者相比，这些女性右半球的M100源明显更靠后，平均值为2.1厘米。这些发现虽然是初步的，但支持颞上叶存在与性别相关的功能和/或结构差异，并且与女性右侧颞平面向后延伸更远是一致的。它们表明，脑磁图记录可能是脑功能和/或结构性别相关差异研究的一个有用补充。
