global signal regression?

严老师您好:

        1. seed-based的两组静息态功能连接,主要想看跟灰质连接情况,两独立样本t检验的maskfile可以使用预处理中mask文件夹里的all resempled grey mask图像吗(灰质的)?

       2.不去掉全脑信号的时候,两组差异不显著;去掉全脑信号,两组差异比较显著。这种情况是不是可以就用去掉全脑信号数据来统计分析?

       

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RESTplus alpha-sim问题请教

尊敬的各位老师:
 
        您好!我使用RESTplus附带的alpha-sim进行fMRI second-level分析校正时遇到一点问题,想向大家请教:
 
        1. alpha-sim中,估计FWHM的过程中,需要输入的mask是什么,是和最终分析使用的mask一样的吗?我在进行second-level分析时,alpha-sim本身使用的即是spm自己在second-level生成的mask.nii,而在估计FWHM时没有输入mask,不知道这样是否可以;此外我发现在对同样的first-level contrast建立的不同second-level分析中(如只考虑跨被试的主效应vs同时考虑一个或几个被试间的调节变量),spm自己报告的FWHM是几乎一样的,而使用REST alpha-sim计算出的却有不一样,不知道这是不是和我在FWHM的估计中没有放入mask有关?
 

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Automask Problem

Dear Dr. Yan,

I've encounted a prolem with automask generation. I know that I can skip Automask. But I am still very curious about its causes.

(1) My generated automask is like the attachment file 2 named 'automaskAfterFillCompletely.png (6.12 KB)'. For most slices, no-brain area was also included.

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DPARSF error

Hello,

 

I am getting the following error after trying to run nuisance regression on DPARSF A:

 

Error using matlab.ui.Figure/set

Invalid or deleted object.

 

Error in matlab.hg.internal.openfigLegacy (line 117)

                set(fig,'Visible',savedvisible);

 

Error in gui_mainfcn>local_openfig (line 286)

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What should pay attention to make mask in DPASF?

I willing to do resting state functional connectivity ,need to know  3 ROI(MNI),but I found actices  almost did not  say them.So I want to make 3 mask as the ROIs  in DPARSF,but not sure what should pay attention to.(just do it or other?The mask are made by WFU_PickAtlas ).THANK YOU!

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新版dpabi的Alphasim有关问题

严老师您好:

    1. 新版dpabi里的alphasim有对话框提示,是不能用了吗?可是统计完的结果,用别的多重比较校正没有结果,用这个alphasim还有一些结果,这样怎么办?(在VIEW里overlay configure 里的p值填的0.01)

    2.想用spss做相关性分析,根据结果出现的某一减弱区存为mask,利用roi extract 提取一组(因为做的功能连接,是用这一组z-FCmap的图吗?)的这个区域的值,最后这组值是不是在ROIsignal.txt这个文件里?

 

   

老师好,请教下关于DPABI 做统计分析的问题。谢谢

严老师您好,在使用DPABI过程中遇到些问题,请教下您。
我做的是三种疾病(精神分裂症、抑郁症、双相情感障碍)与健康人群脑白质FA差异分析,目的在于找到三种疾病共同异常的maker和每种疾病特有的marker。

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Error

Hi,

This is the error that I'm getting when processing the PreprocessingDemoData from the rfmri site. Can you help me with this?

Computing VMHC...
Reading images from "/media/ciara/Seagate/ProcessingDemoData/FunImgARglobalCWFsymS/Sub_002" etc.
Error using y_Read (line 54)
File doesn't exist: /media/ciara/Seagate/ProcessingDemoData/FunImgARglobalCWFsymS/Sub_002.nii.gz

Error in y_ReadRPI (line 41)
[Data,Header] = y_Read(FileName,VolumeIndex);

Error in y_ReadAll (line 68)
[Data, VoxelSize, Header] = y_ReadRPI(FileList{1});

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2d-ReHo and age appropriate atlases

Hello, Dr. Yan, are there any plans to incorporate 2d-ReHo computation in DPARSFA?

Would it be possible to include age-appropriate standard templates in DPARSFA (instead of the standard MNI template)? 

Like this one-

https://www.nitrc.org/frs/?group_id=1189

thank you

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Please help me with the DPARSFA use!

I am getting this error, need help!

 

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