[Mne_analysis] Dspm and loose orientation solution

[Hari Bharadwaj]

Hi Alex,
   Thanks for the response. But the estimated source noise variance is
different for the 3 components, right? So why is it that we only do a
location specific normalization? Is it because all we want to do is
reduce point spread and localization bias at the vertex level?

Thanks,
Hari



On Wed, April 20, 2011 11:56 am, Alexandre Gramfort wrote:
> Hi Hari,
>
> to me the noise normalization is location specific and not orientation
> specific.
> It means that 1 and 2 are equivalent.
> Regarding the --signed option it should not have any influence.
>
> Alex
>
> On Tue, Apr 19, 2011 at 5:26 PM, Hari Bharadwaj
> <hari at nmr.mgh.harvard.edu> wrote:
>> Hi All,
>>  I have a question relating modeling the null distribution in a dspm map
>> with an inverse operator that is not obtained using --fixed.
>>    When mne_make_movie is run with --spm option but without the --signed
>> option which of the following is done?
>> 1. Noise normalize each component first and then do sqrt(sum of squared
>> x,y,z) or
>> 2. Do sqrt(sum of squared x,y,z) then noise normalize
>>
>> Thanks,
>> Hari
>>
>>
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-- 
Hari Bharadwaj