[Mne_analysis] Question about MNE source space patches

[Kadwani, Manorama]

Thanks! I realized that oct6 can work for our purpose too.

Manorama
________________________________
From: mne_analysis-bounces at nmr.mgh.harvard.edu <mne_analysis-bounces at nmr.mgh.harvard.edu> on behalf of Eric Larson <larson.eric.d at gmail.com>
Sent: Monday, August 24, 2020 8:08 PM
To: Discussion and support forum for the users of MNE Software <mne_analysis at nmr.mgh.harvard.edu>
Subject: Re: [Mne_analysis] Question about MNE source space patches


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ico6 is quite dense -- 40962 vertices per hemisphere. ico5 is already 10242 vertices per hemisphere, and oct6 -- which is the default in MNE-Python and typically sufficient -- uses 4098 per hemisphere. Do you really need such a dense source space? If so, you can probably get away without the `--cps` option, since you'll have so many vertices the error of each normal relative to the patch it represents will be diminished anyway. Then you won't run into errors with assigning neighbors.

Eric




On Mon, Aug 24, 2020 at 3:09 PM Kadwani, Manorama <MKADWANI at mgh.harvard.edu<mailto:MKADWANI at mgh.harvard.edu>> wrote:
Hi,

I created the source space for a subject's BEM model using:
mne_setup_source_space --subject <subject name> --ico -6 --cps --overwrite

It completed with a message saying that "Defining patches (this will take a few mins)...Node 187 does not belong to any of the patches".
It did not create the file name "oct-6p-src.fif" as it did for other subjects.
I read that it's a file with patches information. What are patches and how to deal with the said node that doesn't belong to a patch?

Thanks,
Manorama

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