ICA结果中表征组间差异问题

各位好:

         我研究的是中风病人和正常人ICA网络的组间差异问题,拿运动网络为例,我们发现病人组和正常人组的单样本图差异很大(前提是卡了同一个阈值),主要是涉及的脑区范围存在显著差异,正常人组单样本图比较正常,病人组的单样本图明显比正常人组小了好几圈,为了定量表征两组间这种差异,体素个数上的差异(或者说网络覆盖程度的差异),我具体的应该怎样统计呢?我的预想是将每个被试的运动网络的map的体素个数输出来,然后对正常人和病人进行双样本T检验,但是,问题是,我在想每个个体的map在计数前得先卡个阈值,可是卡多大呢?还有是在全脑内计数,还是在一个motor网络的mask内计数呢?而这个mask我选择什么呢?

        希望表达清楚了,望老师能帮菜鸟指点,万分感谢!

Compatibility with MATLAB 2015

Hi,

I am trying to use this toolbox for RSFC and I have MATLAB2015b installed on my LINUX computer. It looks like the current version of the toolbox is not compatible with MATLAB 2015b. Whenever I click something on GUI of toolbox, it keeps on giving me errors.

I would really appreciate any help.

Thanks,

Sahil

Multiple Comparison Problem ROI to ROI analysis using anatomical atlas

Hi all,

 

I am conducting a resting state functional connectivity analysis and I am using a self defined seed region and want to look at the functional connectivity to the ROIs based on the Harvard Oxford Atlas. I was wondering how to deal with the multiple comparison problem. Is the functional connectivity between my seed region and each of the ROIs from the template computed sequentially or simultaneously? If I understand this process directly than this would have big implications for the multiple comparison problem.

 

Young Student seeking Assistance in Identifying Error in Preprocessing steps

Hello friends,

I have been working with 206 resting-state images from http://adni.loni.usc.edu/data-samples/access-data/ . I have been going at this for approximately two weeks with relatively little success. Currently it appears I may be successfully completing slice-timing correction, and then having an error during the realignment stage of preprocessing, but honestly I am uncertain where my error resides.

在 REST SLICE VIEWER 里,如何设置CLUSTER SIZE 的值?还有RMM的值?根据什么 原则了来设定,对结果有哪些影响?多谢!

在 REST SLICE VIEWER 里,如何设置CLUSTER SIZE 的值?还有RMM的值?根据什么 原则了来设定,对结果有哪些影响?多谢!

在 REST SLICE VIEWER 里,如何设置CLUSTER SIZE 的值?

专家好!

我是新手,可能会是个非常简单的问题,麻烦您帮忙指导。多谢!

在 REST SLICE VIEWER 里,如何设置CLUSTER SIZE 的值?还有RMM的值?根据什么 原则了来设定,对结果有哪些影响?多谢!