Gamma oscillation power declined from the 2 day, reaching the marked level at the 3 day and the 5 day in vpfc and then continues to rise to the marked level at the 10 day in vpfc or at the 8 day in dpfc.

• 腹侧gamma频段为第2天开始下降，第3天和第5天分别下降到显著水平，然后开始上升，第10天达到显著水平，背侧下降不明显，上升段第8天达到显著水平。