[Mne_analysis] Use of Maxwell filtering with 4-D Neuroimaging / BTI data

Hakonen Maria maria.hakonen at aalto.fi
Thu Jun 14 14:58:51 EDT 2018
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Hi Josh,

Many thanks for your answer!
I got the figures. Nice to see that Maxwell filter has worked so well on your data.

Best,
Maria
________________________________________
Lähettäjä: mne_analysis-bounces at nmr.mgh.harvard.edu <mne_analysis-bounces at nmr.mgh.harvard.edu> käyttäjän Bear, Joshua <JOSHUA.BEAR at ucdenver.edu> puolesta
Lähetetty: 13. kesäkuuta 2018 20:02:55
Vastaanottaja: mne_analysis at nmr.mgh.harvard.edu
Aihe: Re: [Mne_analysis] Use of Maxwell filtering with 4-D Neuroimaging /       BTI data

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Hi Maria,

I've been wondering the same thing. I'm still exploring the results, but my initial results with minimal intervention are quite promising. We've been getting a strange local artifact that might be related to some of our EEG leads that creates a hyper-local (appears to be directly between 2 electrodes in a linear line) delta band artifact.

I used the following command:
max = mne.preprocessing.maxwell_filter(raw, st_only=True, st_duration=10)

If the attached images are allowed through the list, you should see two images. The top shows that MEG 055 and 057 have a clear artifactual signal. The bottom shows the same data with nothing applied other that the Maxwell filter. As you can see, the data look completely unadulterated other than the artifact disappearing from 055 and 057. Quite promising!

(If the images don't survive the list, I can get them to you some other way.)

That said, I don't have extensive experience with this using our BTI data, so if anyone else has more complete information please chime in!

Best,
Josh


--
Joshua Bear, MD, MA
Assistant Professor of Pediatrics and Neurology
Neuroscience Institute, Children’s Hospital Colorado
(720) 777-6138
joshua.bear at childrenscolorado.org







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