Source inversion DBA (just subcortical activation appears)

1

Dear community:
I am writing because when using the tutorial for deep structures I get the inverse solution but I don't know why all I see is subcortical activations. I never get to see cortical activations.

What I do is...
in Anatomy MRI surfaces I select 15000 vertices for asegatlas then I select "all the structures" in scout. It appears every structure with dba | unconstrained as a Source model(I have previously selected dba in source model option in atlas new atlas). Then I get to "Functional data" where I prepare the head model and then covariate matrix. Finally I double left click in the final inverse soultion and it differs from the one just above. So I need to open to inverse solutions to imagine the total result. It seems to me from the tutorial this should not be correct.

2

Please include screen captures of your database, the source model (cortex+subcortical) and the source maps (inverse) you obtain. Explain why what you obtain is different from what you expect.
Thanks

3

Thank you for your answer. What I want to do is source reconstruction for the whole brain. That is like in the tutorial to be able to see activations in the whole brain with time. Right now I can make it only to see subcortical or cortical only. Although the whole structural brain is there I cannot see activation just as I said (subcortical or cortical never subcortical + cortical as in the tutorial of deep cerebral structures).

Also I would like to obtain statistical analysis and connectivity studies with coherence, correlation, etc.

I will post later all the details of one example so you can say about it exactly. Also I will check the tutorial mentioned. Although I can advance that I found out how to make the ROIs grow with ('>' and '>>'). Although I don't make them even(two complimentary ROIs in different hemispheres have different final volumes). May be because I wasn't able to click on the same area. And if I ask to show labels I can't see them. May be that is a problem of myself or the data.

4

Please illustrate clearly all the items you want help with.