thanks for your answer...
now, i have another question about displaying signals on the cortex from you.
i create head model with brainstorm with 20002 voxelnumber, and then i solve inverse problem with my method and then i wanted to show the estimated voxelsignal with brainstorm, so i have a matrix with dimention (20002*500) for voxels signal, after editing the item "imageGridamp" ;and click the item MRIviewer, the below picture has been shown for me:
as you see,the voxel with the big signal shown like dot!!!!!!!!! very little dot...It is very difficult to find them and distinguish their colors and the difference between their colors.... i wantet to have picture like below:
so what is your suggestion for me to have a good picture for article?
thans