Results In frontal cortex we found that there was a lot of lipofuscin in 1m, and the number declined in 2m;then it was similar to the sham-treated control group.

• 结果额叶皮层：1月时见额叶皮层大量脂褐素，2月有所下降，后与假手术对照组相仿，暗神经元则在2月时最多，后下降；