不同机器采集的数据分析结果出现在脑沟里,如何校正?

严老师您好!我用dpabi分析2组静息态数据,2组被试用的机器不同,一组是在高原采集的,一组在平原采集的,用的permutation test/tfce 发现结果差异很大,且结果出现在脑沟里,我重新检查了分析过程(配准都没有问题)重复了2次都是相同的结果,想请教您我需要怎么调整呢?以下为校正后的结果图,期待您的回复,谢谢您!

请教任务态fMRI和静息态fMRI预处理区别的问题

1.请问各位老师,任务态fMRI为什么一般是在一阶分析的时候做高频滤波,而静息态fMRI一般是在预处理的时候做低频滤波?

2.为什么任务态fMRI一般是在一阶分析的时候加入头动变量,而静息态fMRI是在预处理的时候去除?

3.为什么任务态fMRI在预处理的时候一般不去除白质、CSF等信号?

Question about Preprocessing error

Hi, 

I'm a beginner user of Dpabi and DPARSF.

now I'm trying to preprocess fMRI data using DPARSF.

After a few attempts, I finished the process, but I think the results seems little bit strange(preprocessing step-attached photo)

I found that there would be  no error message during the process. 

change the default DPARSF atlas

I am studying brain connectivity of children in age-range 7-18 years, and I want to use children atlas instead of DPARSF default atla.

I'm studying children's brain connectivity between the ages of 7 and 18 and want to use the children's atlas instead of the default DPARSF atlas. How can I import my desired atlas to DPARSF? What files and in what formats (e.g. .img of .nii) do I need to enter in this toolkit (DPARSF) for this purpose?

best regards

 

my own atlas

how can i import our desirable brain atlas (for example children atlas) into the DPARSF?

which fiels need and should be imported for this purpose?

REST-meta-MDD Consortium Data preprocessing parameters

To whom it may concern, 

GSR or No GSR data preprocessing

Hi. I'm a new user of Dpabi and Dparsf for investigating FC of brain network. 

I have a question about preprocessing steps using DPARSF. 

I want to acquire both GSR(Global signal regression) processed data and no-GSR processed data.

So, in Dparsf, I selected 'Both with & without ~' in Nuisance regressors(WM, CSF,Global) section. (attached photo)

But, the results only shows that the data contain only no-GSR processed data. (attached photo)

My desktop OS is Windows 10. 

Application for Chinese Postdoctoral Scholarship on Dynamic Brain Connectivity

Dear all,

If you have earned a PhD degree in China in the last 3 years and would like to do a Postdoc in an interdisciplinary and internationally competitive environment at Karolinska Institute in Sweden, please see the project below:

Dynamic Changes in Functional Brain Connectivity over the course of Alzheimer’s Disease

想请问来自不同机器不同参数的数据的统计方法

各位老师好,想请问一下如果想统计不同机器扫描的TR和时间点不同的数据,是不是通过dpabi的standardization模块把所有的数据进行Z-standardization,然后统计的时候在text covariates里面再加一列TR和时间点的数据就可以了。。。谢谢老师们。。。

Dpabi和fmriprep的兼容可能性

老师您好
 
请问dpabi是否可以兼容fmriprep预处理后的文件 (BIDS 格式)?
 
brain mask; 原始 bold;预处理后的 bold; smooth_AROMAnonaggr_bold.
 
请问预处理后的 bold信号 (preproc_bold.nii)可以直接带入吗?还是需要进一步转换
 
谢谢老师

Pages

Subscribe to Front page feed