[Mne_analysis] misc concerns and questions with mne_analyze and 256-channel EEG data

[Jeff Eriksen]

Hi MNE analyzers,

I have just succeeded in manipulating my data so that I can use mne_analyze for interactive analysis. So far I have

Exported EEG as EDF file
Converted to FIF file
Aligned electrodes to scalp surface
Created a single event and averaged so I could treat my raw data as averaged data (only way to get to into mne_analyze, I am told)
Created BEM, forward, and inverse
Loaded all into mne_analyze

Questions & concerns:

Source solutions on inflated surface do not seem to bear any relation to the scalp EEG data plotted on the scalp surface
I cannot get the MRI solutions to change as I change the time sample, thought the other displays behave appropriately
Also, the single MRI solution looks like the dMNE ones, and does not change as I switch to MNE or sLORETA estimates
I cannot figure out how to display any EEG on the right-hand Data window, even after choosing "Adjust/select trace layout/sample EEG"
I can find not mention in the manual on how to adjust the display amplitude of the source waveforms in the bottom left pane
MNE source locations are fairly evenly spread out across both hemispheres, but dSMP and sLORETA's are mainly confined to R hemi
All the source waveforms appear to have DC shifts lasting for the entire epoch – this does not seem right

All in all, I am not comfortable with what I am observing, and wonder if I have dome something grossly wrong in my analysis stream so far. I am post files and screenshots to DropBox if anyone is willing to assist me with any of the above.

The best thing I can think of doing at this point is to create some simulated time courses and EEG and run it through the steps I have performed above.

-Jeff Eriksen

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20120608/4df967b0/attachment.html