resting state granger causality

Submitted by ladansh on Thu, 06/30/2016 - 13:58

Dear experts, 

I want to apply granger causality to my resting state data using REST toolbox.
I'm pretty new in this field so I don't know if I'm doing the right thing. 
Are there any specific considerations that I have to take into account before applying GC to my data?
what characteristics should my data have to be eligible for granger causality calculations?

Best, 
Ladan

Forums:

YAN Chao-Gan

Tue, 07/05/2016 - 03:58

Hi Ladan,

Please have a look at: Zang, Z.X., Yan, C.G., Dong, Z.Y., Huang, J., Zang, Y.F., 2012. Granger causality analysis implementation on MATLAB: A graphic user interface toolkit for fMRI data processing. J Neurosci Methods 203, 418-426.

ladansh

Sun, 07/17/2016 - 09:30

Thanks, I read the paper. It was helpful.
I also read the readme and the power point presentation on how to use the toolbox.
I have a question about the output. You see I want to use this toolbox to construct a directed graph's adjacency matrix. It should contain for example the GC coefficient for each pair of nodes.

How can I achieve this?

forgive me if my question is so simple.  

YAN Chao-Gan

Wed, 07/20/2016 - 06:53

Hi,

You will get a x2y matrix and a y2x matrix, then you can combine to a directed matrix.