Dear Valentina,
Time series are saved anywhere in an explicit way. You could use the
source extraction tool available in batch to extract time series from
particular ROIs. Note that the MSP algorithm can lead to a sparse
solution where for many vertices there is no activity at all so you
might want to think carefully what algorithm you use and how you
define those ROIs.
Best,
Vladimir
On Thu, Feb 3, 2022 at 1:59 AM Pergher, Valentina
<[log in to unmask]> wrote:
>
> Dear colleagues,
>
> I am a postdoctoral researcher at Harvard Medical School, Boston Children Hospital, working on EEG and source reconstruction/functional connectivity. Considering your publications, I saw that you have worked with EEG data and SPM, therefore I was wondering whether any of you could be available for an urgent technical question I have.
>
> To summarize, I followed the online guideline for SPM12 (https://www.fil.ion.ucl.ac.uk/spm/doc/manual.pdf), specifically from p. 393, chapter 41.3 Source reconstruction. However, when I arrive at the final step where the final .mat file is saved (SPMgainmatrix_maefdfMspmeeg_subject1.mat) and the previous .mat file is updated (maefdfMspmeeg_subject1.mat.), I am not sure how to read the results that I will then use in my functional connectivity script. Please, see attachment. Looking at both final .mat files, 1) I do not see time variables, and 2) there are a lot of different variables saved as letter that I can't find anywhere the meaning of.
> If you think you can help me, please let me know.
>
> Looking forward to hearing back from you.
>
> Thanks!
>
> Best,
> Valentina Pergher
> Postdoctoral Research Fellow
> Neuropsychology Lab
> Harvard University
> Laboratories of Cognitive Neuroscience
> Boston Children’s Hospital
> Harvard Medical School
>
>
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