modulation in VBM (in DPARSFA)

Submitted by Chen0075 on Fri, 06/14/2013 - 02:52

 各位老师, 有个VBM的问题, 

在做VBM的modulation时候我们经常这样选择：
单击Modulated normalized选择“affine+non-linear only”。这里的affine+non-linear only是什么意义，是说T1像经过affine和non-linear两次normalization，然后得到一幅MNI的图像？
在DPARSFA的VBM里面是如何选择normalization和modulation过程的。

谢谢！

Forums: 
Resting-state fMRI topics

functional connectivity maps

Submitted by Helen Sawaya on Thu, 06/13/2013 - 15:45

 Dear all,

I am new to DPARSF and I have a question concerning the z transformed functional connectivity maps. I am a bit surprised at the results because the z values of my maps are pretty low (most are between -0.6 and 1). I did not globally regress my images and I expect at least a few voxels to have values of 3 or 4. Anyone has any ideas as to why that is happening?

Forums: 
Resting-state fMRI topics