What is the meaning of this document T2.nii_Cohen_f2？

Submitted by doctorsol on Sun, 08/19/2018 - 03:32

After completing the two-sample t-test by SA, two files were generated：T2& T2.nii_Cohen_f2.

What is the meaning of this document T2.nii_Cohen_f2？

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Detailed description of head motion scrubbing regressors

Submitted by YML on Wed, 08/15/2018 - 18:21

Dear Yan,

I did a "head motion scrubbing regressors" in the nuisance regression step in DPARSFA in my study. The reviewer asked me how this was performed in detail. I know this is different from the "scrubbing" at the bottom of DPARSFA, so it's inappropriate to cite Power et al., 2012. But is there any reference that I can refer to? Is the processing the same to what the FSL's motion outliers tool (http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/FSLMotionOutliers) does?

Thank you so much.

Minlan

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How to use "Extract ROI time courses" separately?

Submitted by lucy on Wed, 08/15/2018 - 15:03

Hi, pro. Yan

I had used DPARSF A computed whole-brain  FC  with a specific ROI (a sphere) a few days ago, and I have the individual FC results.

Now, I want to extract the time courses of a specific region (already have the mask) in these individual results image

Can DPARSF A achieve that?

How should I do?

Particularly, I do not know what is the right "Starting Directory Name".

Thanks for your reply!

BEST WISHES!

Lucy

 

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T Statistical Image from Paired T-test

Submitted by Shatgul on Wed, 08/15/2018 - 12:28

Dear experts:

I performed a paired t-test and the output were the TP.nii  image and the effect size map. I could not find information about the output in the online courses.

Would you explain how I should make sense of this T statistical image output ( including the 3 values: P, Thrd and the one on the very top under Brain Images catogory?

How do I know if there is a significant difference between the 2 conditions that I have given from this image? Does P stand for P-value, if I set it up to 0.05, what information should I look for?

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Montage view and Overlay

Submitted by veeus18 on Wed, 08/08/2018 - 14:20

Montage view and Overlay-

a) How do I get the slice number, the L/R orientation, and the color bar to show on the montage view? I don't see any options either in the Viewer or the Montage gui.

b) in the Viewer, the Overlay looks quite pixelated; is there a way to change that? [I have used the szReHomaps from the ResultsS/ReHo_FunImgARCWF/ folder to compute the stats.

b) 

Thanks much.

 

 

 

 

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如何将多个ROI合并生成一个ROI？

Submitted by AlRay on Wed, 08/08/2018 - 11:54

严老师您好！

计算功能连接时，我有5个球形ROI，请问如何将这五个ROI合并成一个ROI来计算FC呢？

谢谢老师！

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相关分析后的平滑和过低

Submitted by AlRay on Mon, 08/06/2018 - 08:52

严老师您好：

预处理时设置的平滑和为FWHM[4 4 4], 相关分析后结果图像的平滑和只有5，感觉比较奇怪，可能出错了，请问可能是什么原因导致的？

谢谢老师！

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DPABI重复测量方差分析时，在permutation test或后续的多重比较校正时报错

Submitted by nangongjingtian on Thu, 08/02/2018 - 13:28

各位老师们：

          你们好！最近在使用DPABI进行单因素重复测量方差分析（ANCOVA,Repeated Measures）时，可以生成F图，但在点击DPABI重复测量方差分析的permutation test，或用生成的F图放到viewer后，做后续的多重比较校正(GRF)时均报错，报错信息如下：

Convert F to Z...

Forums:

voxel-wsie correlation between two images

Submitted by nomad on Wed, 08/01/2018 - 19:41

Hi,

 I am trying to calculate the correlation between two image datasets and perform the permutation test. Is it possible to calculate the voxel-wise correlation via DPABI?

Thanks,

Haitao 

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