[Mne_analysis] source estimate stc files and current source density estimates

[David I Leitman]

HI all,

I have been trying to figure out how to get a measure of current source density from the l2 min-norm source model. It seems that both methods dSPM and MNE that I use, yield  arbitrary or r  statistical values (MNe manual 6.2.6). From what i can tell this is do to the noise normalization step as described in the MNE manual is there any way to get a CSD measure in microamps or something real?

My second question is if I pass my epoched or evoked data through the mne L2 min-norm source model using  mne or dSPM as the method, Can the resulting time-series data comprising these MNE or dSPM values be submitted to temporo-spectral analysis? If so how is power at a particular frequency calculated? and if you can only get db change, how do wavelet or FFT procedure used to measure oscillations conform to statistical distributions like the f distribution in-terms of their non-normality and tendency to be skewed? I should say I am not a statistician ... so this latter point may be a non-starter:)

Finally, is the above a problem for the beamforming routines detailed in MNE python? I do not know much about this approach.

thanks so much 

david


David I. Leitman PhD

Research Assistant Professor
Department of Psychiatry-
Neuropsychiatry program
Perelman School of Medicine
University of Pennsylvania
Gates Pavilion 10th floor room 1042
3400 Spruce St
Philadelphia, PA 19104-4283
P: (215) 662-7389
F: (215) 662-7903
E: leitman at mail.med.upenn.edu
Faculty page:	http://www.med.upenn.edu/apps/faculty/index.php/g275/p8174343
Lab website:
 http://davidileitman.com

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