[Mne_analysis] flat channels

[Elena Orekhova]

Dear MNE users,

After filtration with the Maxfilter some periods of the MEG signal are left flat.  I guess that they can be rejected before averaging using  gradFlat and magFlat options in the description files for averaging and covariance matrix estimation.
What would be suitable values of gradFlat and magFlat ?

Regards,

Elena


Elena V Orekhova, PhD
Dept. of  Clinical Neurophysiology
University of Gothenburg
S-413 45Gothenburg, Sweden
phone: +46 31 342 48 02
elena at neuro.gu.se
________________________________________
From: mne_analysis-bounces at nmr.mgh.harvard.edu [mne_analysis-bounces at nmr.mgh.harvard.edu] on behalf of Akiko Ikkai [akiko at nyu.edu]
Sent: Thursday, April 22, 2010 1:44 AM
To: mne_analysis at nmr.mgh.harvard.edu
Subject: [Mne_analysis] converting label format: nifti - freesurfer - MNE

Hi,

I'm making custom ROI labels using FSL's flirt, and converting them into .label format with mri_cor2label. This process is successful since I could overlay my new ROI labels on MRI images (e.g. brainmask.mgz) in tksurfer. However, when I try to overlay them onto inflated surface in mne-analyze, I get this error: some label vertex indexes are out of range.

Then, if I open a label in tksufer and save it (in tksurfer, without changing anything), I'm able to overlay the label in mne-analyze. I'm puzzled why this is, and am wondering if there is a way to skip this intermediate (tksurfer) step.

I'd appreciate any suggestions! Akiko
_______________________________________________
Mne_analysis mailing list
Mne_analysis at nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis


The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.