FC_FunImgARglobalCWF and FC_FunImgARCWF folders

Submitted by CHL on
Dear all,
 
I have a simple quedtion about the difference between FC_FunImgARglobalCWF and FC_FunImgARCWF folders.
 
If I'm correct, the former one, FC_FunImgARglobalCWF, is the result without regressing out GSR, and the latter one, FC_FunImgARCWF, is the result after regressing out GSR. 
 
Do I understand the contents of the folders correctly?
 
 
 
Thanks.
 
Best regards,
 
Chih-Hao 

Data Sharing of the REST-meta-MDD Project from the DIRECT Consortium

Submitted by YAN Chao-Gan on

(Note: Part of the content of this post was adapted from the original DIRECT Psychoradiology paper (https://academic.oup.com/psyrad/article/2/1/32/6604754) and REST-meta-MDD PNAS paper (http://www.pnas.org/cgi/doi/10.1073/pnas.1900390116) under CC BY-NC-ND license.)

标准化与协变量的顺序及存在的问题

Submitted by treasure_girl on

尊敬的严老师:

       您好,我在进行预处理时,产生了下面两个问题

       1、我使用的是EPI模板进行空间标准化的,协变量放在标准化之前和之后都会产生下面问题,这个问题对最终结果的影响大吗?

             警告: 矩阵接近奇异值,或者缩放错误。结果可能不准确。RCOND =  1.724427e-09。

Error caused by running c_null_model_und_sign

Submitted by Chih-Hao on
Forums

Dear All,

I get an error when I click "generate" in the Network Construction panel.

(The version of MATLAB is 2020b)

I try it several times, but it always happens, even when I don't click Calculate Graph Matrics and Raw Matrix.

To avoid any conflict between toolboxes, All toolboxes, but GraphVar, are removed.

I attach a picture for showing the details of my setting.

Covert surface images in fsaverage5 space into volume images in MNI152 space puyunfashi
  1. First covert the original image in fsaverage5 space into image in fsaverage space. If your image is in fsaverage space whatsoever, please skip this step

 

After GRF correction, significant clusters are larger

Submitted by Kaiyu Huang on

老师好!

我在对一张R.nii图像进行GRF矫正之后,发现看到的cluster比没做矫正之前更大了,这是不是不合理啊?

我的操作是这样的:

1)在Dpabi View的overlay里选定一张R.nii 图像 (这个界面的Nmax 和Nmin分别代表什么呢?我在两台不同电脑上打开同一个图,它出现的数字是不一样的)

2)在Overlay configure 输入P(0.05),df=5(sample size =7。 这里有点奇怪,df改为5后,accept了,但是重新点开‘df’,又是原来默认的数字,得改两遍才会变成我想要的那个数字。)

    完成这一步之后,看到的cluster都很小很小,应该是过不了GRF矫正了?

3)Cluster里那一栏选GRF,选定我自己的mask--- voxel p value (0.0214)----cluster p value(0.05)---- Two tailed----Compute

    这一步之后,激活的团块面积就变大了!

 

请求老师解答!非常谢谢!!