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Are you getting any error messages when trying to display the dataset? The problem with channel types is not related to ICA so can also happen just with converting back and forth, but if you apply the montage as I suggested it shouldn't happen. Best, Vladimir On Wed, Oct 12, 2011 at 2:54 PM, Urbain Charline <[log in to unmask]> wrote: > Dear Vladimir, > > Just to let you know, I just tried the following: I converted as before SPM > data into a Fieldtrip data structure using the function ftraw, and then > directly applied the opposite conversion spm_eeg_ft2spm (so without ICA > artifact rejection) and the problem is still present. It is therefore not > likely related to my ICA procedures, but more probably to some sort of > compatibily problem between the two functions I mentionned. > > Do you know if other poeple used this procedure (ftraw and spm_eeg_ft2spm) > and reported that it worked correctly? > > Best, > Charline > > > 2011/10/12 Vladimir Litvak <[log in to unmask]> >> >> The montage I mentioned is generated around line 150 of >> ft_rejectcomponent. So you can just put a breakpoint there or add >> your bit of code saving it to a .mat file and then use that file for >> SPM montage function. >> >> Vladimir >> >> On Wed, Oct 12, 2011 at 2:39 PM, Vladimir Litvak >> <[log in to unmask]> wrote: >> > Dear Charline, >> > >> > I don't know for sure but one possibility is that your channel types >> > are not set correctly any more and all the channels appear in the >> > 'Other' tab. In general I would suggest you instead of converting your >> > clean data back to SPM to get from FT the montage matrix representing >> > ICA component removal and apply it to your SPM dataset using >> > spm_eeg_montage. >> > >> > Best, >> > >> > Vladimir >> > >> > On Wed, Oct 12, 2011 at 2:20 PM, Urbain Charline <[log in to unmask]> >> > wrote: >> >> Dear Vladimir,Dear SPMers, >> >> >> >> I have a problem concerning the convertion of FieldTrip data into >> >> GUI-readable SPM data. >> >> >> >> Specifically, the problem is the following: I successfully converted >> >> SPM >> >> data (preprocessed with SPM *.beffspm.mat) >> >> >> >> >> >> >> >> into Fieldtrip data to perform an ICA analysis. After removing the >> >> artifactual ICs from the data, >> >> I converted the resulting Fieldtrip data structure into SPM structures >> >> .dat >> >> and .mat using the function >> >> spm_eeg_ft2spm, which seems to work. >> >> >> >> >> >> >> >> >> >> However, I am now unable to display the data into the GUI. Do you know >> >> why? >> >> >> >> Thank you very much for help! >> >> >> >> Charline >> >> >> >> >> >> >> >> >> >> >> > > >