January 2015

MATLAB:nomem error while detrending

Submitted by ma.shalchy on Thu, 01/08/2015 - 12:04

Dear experts

As I want to detrend my fmri images (1200 volumes per subject) matlab runs out of memory. I tried to Turn on the 3GB swithch but I faced a blue screen error afterwards. Detrending option works well on up to 400 volumes. How could I tackle this problem?
I highly appreciate your help.

Best,
mahsa

Forums: 
Resting-state fMRI topics

interpreting GC path coefficients

Submitted by ma.shalchy on Thu, 01/01/2015 - 10:50

Dear experts
Since I do not see a negative path coefficient in any related paper, I have difficulty interpreting the results. i.e if tvalue of ROI1 vs ROI2  path coefficient  is -0.8 and ROI2 vs ROI1 coefficient is +0.003 how should I assess the overall effective connectivity (direction and srength)?
 
Many thanks in advance,
mahsa

Forums: 
Resting-state fMRI topics