Resting-state fMRI topics

Degree Centrality and negative correlations

Hi,

I would like to know whether the Degree Centrality calculation is based on positive correlations only, or also on negative correlations? If I set a correlation threshold of r=0.2 will it take the absolute values of correlation and include negative correlations as well? If no, is there a way to calculate DC taking into account both positive and negative correlations at the same time? 

Kind regards, 

Anja Ries

Degree Centrality and negative correlations

Hi,

I would like to know whether the Degree Centrality calculation is based on positive correlations only, or also on negative correlations? If I set a correlation threshold of r=0.2 will it take the absolute values of correlation and include negative correlations as well? If no, is there a way to calculate DC taking into account both positive and negative correlations at the same time? 

Kind regards, 

Anja Ries

Degree Centrality and negative correlations

Hi,

I would like to know whether the Degree Centrality calculation is based on positive correlations only, or also on negative correlations? If I set a correlation threshold of r=0.2 will it take the absolute values of correlation and include negative correlations as well? If no, is there a way to calculate DC taking into account both positive and negative correlations at the same time? 

Kind regards, 

Anja Ries

slice timing处理数据时TR不一致怎么批处理

尊敬的严老师:

      您好!最近处理一批fmri的数据,每个被试的TR不一致,有2、2.1、2.3等等,在进行到slice timing这一步时如果上一个被试与下一个被试TR不一致程序就会自动停止。我按照之前授课视频将TR设置为0自动检测TR的做法,但是matlab总是报错。希望老师能给予解答,谢谢老师。(DPARSF 4.3 basis,spm8,matlab2010b)