[Mne_analysis] issue with inverse operator (repost)

[rsachdev at nmr.mgh.harvard.edu]

Hello Eric,

We tried the stable release and the nightly build.  The stable release
inverse operator seems to work fine but than the issue with the projection
vectors exists.  With the nightly build, it's the opposite, the inverse
operator gives me the issue and there seems to be no problem with the EEG
and MEG projection vectors.





> I had a problem with the EEG projection vectors affecting MEG channels
> as well. However, it only happened on my linux x86_64 install, not on
> a linux i686 install or osx installs. As you note, this channel
> corruption on x86_64 was fixed in a recent nightly. I assume, then,
> that you're running the linux x86_64 nightly?
>
> If so, one thing you could try is generating your inverses using all
> four combinations of 1) the last stable release and 2) the latest
> nightly combined with 1) the x86_64 linux version and 2) the i686
> linux version. (The i686 linux version should run just fine on 64-bit
> linux installs.) If you can identify which of the four combinations
> suffers from this problem, then it could help narrow down the cause of
> the problem.
>
> Eric
>
>
> On Fri, Jun 3, 2011 at 9:39 AM,  <rsachdev at nmr.mgh.harvard.edu> wrote:
>> Hi all,
>>
>> It's been a few weeks, and I am still having trouble with this.
>>
>> There seems to be an issue with the inverse operator from the nightly
>> build version of MNE.  The activation shown on the brain looks unusal.
>>  I
>> am using the nightly build because in the previous versions working with
>> SSP for EEG affected the MEG channels and it was fixed in the nightly
>> build.  Now, I seem to be running into some trouble when using an
>> inverse
>> operator created from both MEG and EEG data, the MEG based inverse
>> operator works/looks fine.  Anyone have any work-arounds or solutions?
>>
>> Thank you
>> -Ricky
>>
>>
>>
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