Tanosaki Masato, Hashimoto Isao
Third Department of Internal Medicine, Hirosaki University School of Medicine, Aomori, Japan.
Neurosci Lett. 2004 Apr 15;359(3):175-9. doi: 10.1016/j.neulet.2004.01.043.
We studied the relationship between the distal-proximal representation of the digit in area 3b and moving dipoles of the primary magnetic response (N20m). By the use of ring electrodes, a distal or proximal portion of the middle finger was stimulated to elicit N20m. The dipole locations were sequentially analyzed around the N20m peak. The dipole locations did not differ between distal and proximal stimulation before the N20m peak. After 0.4 ms post-N20m peak, however, the dipoles following proximal stimulation substantially and progressively shifted laterally to those following distal stimulation. The result suggests that the N20m dipole moves from the distal representation toward the proximal representation of the digits in area 3b.
我们研究了3b区中手指的远侧-近侧表征与初级磁反应（N20m）的移动偶极子之间的关系。通过使用环形电极，刺激中指的远侧或近侧部分以引出N20m。在N20m峰值周围顺序分析偶极子位置。在N20m峰值之前，远侧和近侧刺激的偶极子位置没有差异。然而，在N20m峰值后0.4毫秒，近侧刺激后的偶极子相对于远侧刺激后的偶极子大幅且逐渐向外侧移动。结果表明，N20m偶极子从3b区中手指的远侧表征向近侧表征移动。
