GCA

Submitted by ma.shalchy on Thu, 11/20/2014 - 02:28

Dear Experts
Hi

I have identified DMN using ICA algorithm and I would like to examin effective connectivity using GCA.
As far as I know unlike functional connectivity,effective connectivity is presented as a set of nodes (regions) and edges. How should I specify nodes and edges?How could I obtain path coefficients?
Many thanks in advance.

Best,
mahsa
 

Submitted by jigongjun on Mon, 11/24/2014 - 20:40

 There is a GCA module in REST software. 
Node could be defined by MNI coordinates or img mask.
The results of GCA is the Granger causility between nodes, estimating the amplitude and direction between nodes. 

For more details of the GCA in REST, please see http://www.restfmri.net/forum/REST-GCA

Submitted by jigongjun on Mon, 11/24/2014 - 20:40

 There is a GCA module in REST software. 
Node could be defined by MNI coordinates or img mask.
The results of GCA is the Granger causility between nodes, estimating the amplitude and direction between nodes. 

For more details of the GCA in REST, please see http://www.restfmri.net/forum/REST-GCA