各位老师：
最近投了一篇 文章到Wiley 旗下的杂志，已经接受了，给我发proof的邮件里面说 “please log in into Author Services (https://authorservices.wiley.com) and click on "My Dashboard." When you locate your article on the Dashboard, please click the button that says "Sign License" to use the Wiley Author Licensing Service (WALS) to complete your license agreement。”
Dear Chao-Gan,
Recently I have done a study which includes two datasets (30 patients and 30 controls, and 20 patients and 21 controls, respectively), and the second is the subset of the first. The reviewer required me to report the globle correlation between these two contrasts. However, I have never done such analysis before. Can I use dpabi or any other software to achieve it?
Best,
Vincent
Hi,
I was wondering if it is possible with DPABI to check the quality of the coregistration somehow? I could only find pictures for checking the quality of the Normalization.
greetings
David
Dear experts.
I am looking for csf and white matter signal covariates and find the attached file in ...globalCovs folder.
However, the file contained 30 columns and perhaps the last three columns would be meaningful to me.
Please let me know which comumn represents csf, white matter, and global signal.
Best regards,
tetsuya
Dear Chaogan,
My study is to use voxel-based rs-FC measure to perform statistical analysis. That rs-FC measure was generated within a GM mask, so that FC was calculated between any two voxels within the GM.
After statistical analysis, however, I consider that the whole brain mask, instead of the GM mask, should be used for smoothness estimation (FWHMx,y,z) with 4D residuals.
Dear experts,
I used Gissian random field (GRF) in DPABI for multiple correction when comparing rs FC maps differences between patient groups.
Dear experts,
I used Gissian random field (GRF) in DPABI for multiple correction when comparing rs FC maps differences between patient groups.
However, a reviewer suggested "this method (GRF) is based upon the hypothesis that the spatial smoothness of BOLD signal in the whole brain is consistent and the distribution of the spatial autocorrelation function in accordance with specific curve. Practically, the BOLD data is hardly accord with the hypothesis".
Dear Dr Yan
I have several problem which confuse me .
1. How to set the thr in the image caclator. I gonna set a mask use the expression, (i1<thr)+(i2<thr). I have no idea about the definition of thr. I had ever used the number of Voxels(alpha sim correction) and thr in Viewer. But it doesn't work.
2.It confuse me that there are many noises in the blank region.
Dear Dr.Yan,
May I ask a simple but sounds stupid question? I know it should do reho before smoothing, but is it possible that calculate alff before smoothing as well? Why?
best
fish