Dear Stefan,
> Hi Cyril,
>
> great decision to move on to EEG data. :-)
>
> Right now, there isn't a routine in SPM/MEEG to convert *.avg files to
> the SPM-format. Currently, the only way is to read in your raw data and
> perform all the preprocessing steps up to the average.
>
> [...] you can also look into the conversion function
> spm_eeg_rdata or spm_eeg_rdata_bdf to see how one would do a conversion
> to SPM format. I guess that a first version of the manual (for the M/EEG
> bit) is available in a few weeks time.
Looking at the spm files, I think one can import the average data
without 'big' modifications...
In Neuroscan, I saved the data in ascii including skipped channels to
obtain the HEOG and VEOG. Then, I used the spm_eeg_rdata_dat.m file. The
main problem here is that I used the hear as reference (named A1 in
neuroscan) and it does not fit with the 61channels.mat that contains 63
channels (strange name ;-) ). Loading the template, there is two
channels that are also cell array ?? why that ?
I think the solution is to be able to import it's own template with
electrode names, locations .. then the spm_eeg_rdata_dat.m can be used
(with one or two modif) - how can I create my own template? (do you
think it's possible to use the set_up.ast file from Neuroscan?)
I quite sure that it's possible ..we can then import electrode location
of a given subject registered with Polhemus for example (cool when you
also have the (f)MRI :-) ).
Thank you for your help,
Best,
- Cyril
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