[FieldTrip] Prewhitening on Elekta MEG data

[Sanjeev Nara]

Dear Fieldtrip community,

I am following the new tutorial for source reconstruction from Elekta MEG data available on the fieldtrip website, (http://www.fieldtriptoolbox.org/workshop/paris2019/handson_sourceanalysis/). This new pipeline uses a new function called ft_denoise_prewhiten which eventually makes possible to use all 306 MEG channels in source reconstruction. While replicating this tutorial I am having few issues.

1. The tutorial uses a function named datainfo_subjects, is this a new function in fieldtrip or any custom made matlab function just for this tutorial? I searched the newest version of fieldtrip but couldn't find it.

2. Can we use the all the 306 channels (prewhitened data) for computing time frequency analysis at the sensor level as well?

3.Does this prewhitening somehow AFFECT the source reconstruction using DICS methods and further connectivity methods.


I would really appreciate any support.

Thanks


Best regards
Sanjeev

Sanjeev Nara
Predoctoral Researcher BCBL
www.bcbl.eu
https://sites.google.com/view/sanjeev-nara/
Tel: +34 943 309 300 (ext 314)
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