ICA

 Hi, 

I have a question about how to decide ICA component number. I am to tell my riviewer that it is based on the experience (1/3-1/4 volumes, is it right?), but I did not find the relevant references. Could you provide some references for me? thanks. And any suggestion about how to answer this reviewer's question is appreciated. 

rest-GCA数据结果请教

老师:
     您好!
     请原谅我的冒昧打扰。最近本人在做GCA的ROI-Wise网络研究,其中遇到了一些问题想向您请教。
     (1)order的设定是否与roi为二元或者多元有关吗?如果有,不知道具体的设定规则是什么样的?
     (2)在做基于残差的计算时,生成了多个文件,不知道每个文件中的数值分别代表什么?其值是Z分数还是F分数?(文件以附件形式添加)

ALFF

 各位老师您好:

     我基于某几个ROI计算ALFF,每个被试得出一个*.nii文件,然后我做one-sample t-test,得出T*.nii文件,我该如何取出我定义的ROI的ALFF值呢?弱弱的问一下,ALFF可以用来做些什么工作呢?我之前这样做的步骤对吗?

谢谢各位老师帮忙回答!