any problem if do two same analyses (e.g. ALFF) with two separate Matlab at the same time in the same user account?

Submitted by Miki on Sat, 07/28/2012 - 08:26

Hi, when I do two same analyses (e.g. ALFF) with two separate Matlab at the same time in the same user account, I found that it is likely that one of the analysis crashes with the other. I notice that they both produce and erase tmp files with random numbers in the /tmp/ directory constantly. If both analyses produced the same file concidently, e.g. ALFF_3462_username, and one of the analysis deleted it after using it while the other analysis suddenly lose track of such file then it will crash. Is that true?

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Resting-state fMRI topics

有关ICA的比较选取的mask及意义

Submitted by 287391600 on Fri, 07/27/2012 - 01:23

老师：
      您好！希望可以请教一个ica的问题。
      我一直都在做ica的处理，如果我想比较病人组与正常对照组运动网络的差异，怎么定义比较的mask，因为如果在全脑水平上比较，出现差异的地方有可能是负激活的区域，可是我只要比较正的激活的运动网络，所以比较的mask就不知道怎么选了？
     另外，还是一个基本概念的问题，ica得出的具体意义怎么说，写文章的时候怎么表达，例如功能连接的比较可以说功能连接减低或增高，那么ica的比较高低怎么用语言表示呢？
   非常感谢！

Forums: 
Resting-state fMRI topics