关于用统计分析模块添加协变量的疑问

尊敬的严博士,我在用统计模块进行两个独立样本T检验时,在添加患者组和对照组后,还添加了Mean FD,性别,年龄,教育年限等协变量,但是我发现在点Run之后,并没有运行协变量,得到结果和我没有添加协变量时是一样的,我怀疑是我编辑的协变量文件不正确。例如我建立一个记事本文件(OCD.txt),假如我有13个被试,我就编辑成13行,4列;每一行从左到右以此是:性别,年龄,教育年限,Mean FD;打开后内容如下:

1 24 16 0.061
1 55 12 0.089
1 18 09 0.107
0 44 15 0.057
0 36 09 0.093
1 38 16 0.109
0 33 11 0.116
0 23 16 0.062
0 29 12 0.054
1 17 11 0.117
1 49 09 0.104
0 27 15 0.127
1 35 12 0.048
(想让老师们帮我看一下,我这个编辑的方式是不是有问题?感谢老师,我爱你们)

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关于用统计分析模块分析VMHC结果的疑问

结果如下:DLH 0.091699 voxels^-3 before correcting for temporal DOF

 

FWHMx = 3.744741 voxels

FWHMy = 3.687451 voxels

FWHMz = 3.645997 voxels

FWHMx = 11.234224 mm

FWHMy = 11.062353 mm

FWHMz = 10.937990 mm

DLH = 0.092841

VOLUME = 174972

RESELS = 50.345928

尊敬的严博士,关于这些结果我不是很明白,我想了解一下上面这些结果分别表示什么意思?感谢亲爱的严博士

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为什么我的mask图像是方形,完全不是头颅的形状

为什么我的面具图像是方形,完全不是头颅的形状
我检查过,在我进行质量控制模块时,我的T1Img,FunImg,以及标准化后图像都是正常的,但是我的面具文件里的图像都特别奇怪,完全不是形似头颅,而是方块形的的,求老师们给我一些建议,可能是哪里出问题了,还有就是我不知道这个论坛,怎么发图片信息?

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Error using GCA in RESTplus

Hello! I am attempting to use RESTplus V1.2 for a granger causality analysis on fMRI data, but I keep getting the following error:

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How to add covariates in Mixed Effect Analysis?

Dear Dr. Yan,

I encountered a problem while doing Mixed Effect Analysis. I wanted to add covariates (age, gender and handness). But the problem is that the covariates are the same for both condition 1 and condition 2.

I added as

group1_cov.txt

group1_cov.txt

group2_cov.txt

group2_cov.txt

Then Dpabi ran for hours and gave weired results. I also tried to name the covariates differently but it didn't work either. I wonder what is the proper way to add covariates in Mixed Effect Analysis. 

Thank you!

Best Regards,

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DPARSF error using copyfile

严博士,您好:
                   不好意思打扰您,我是来自郑州大学的一名研究生,最近在学习DPARSF对fMRI数据进行预处理时遇到问题,在查找资料无果后,故此写这封求助信向您求助,望您在百忙之中能够抽空帮忙解答疑问。具体问题如下:

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how to extract ALFF value of ROIs

Dear Yan,

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dparsf预处理出错,非常紧急,求老师们帮看看

 
Error in DPARSFA_run>(parfor body) (line 274)
        if strcmpi(DirDCM(3).name,'.DS_Store')  %110908 YAN Chao-Gan, for MAC OS compatablie
 
Error in parallel_function (line 466)
            F(base, limit);
 
Error in DPARSFA_run (line 270)
    parfor i=1:AutoDataProcessParameter.SubjectNum
 
Error in DPARSFA>pushbuttonRun_Callback (line 1786)

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GraphVar_2.01 GLM panel

Hello!

I read GraphVar_SPSS_GLM_validation and GraphVar_Manual but I don,t know GLM panel.

Could you explain me the difference between them(between covariate,nuisance covariate,within covariate)?

All the best,

Yuki

 

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Group gray matter density mask

Dear Experts

I would like to genearate a group GM mask by using DPABI's quality control module.

In my understandings, I could generate a GroupMask90Percent.nii based on wAutomask, and then thresholding the mask.

  1. How to create a group specific GM mask by using QC module?

In addition, all images must have the same dimension for statstiscal analysis.

If a group GM mask was generated using SPM Masking toolbox, and then reslicing the mask.

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