[Mne_analysis] depth weighting

[Pavan Ramkumar]

Thanks a lot Dan and Hari!

I did try looking into the script of mne_do_inverse_operator but I haven't
managed to figure it out yet. I'm not sure what command line args to
specify for input parameters I don't use such as $eeg and $fixed

I read through Lin et al. 2006 and it appears from their discussion that
MNE without dSPM is better for deep sources. This was useful.

I'm currently playing with simulated sources in odd places like medial
prefrontal cx and cingulate cx; but a depth weighting exponent of 0.8
estimates the cingulate source in the posterior STG/auditory cx, even for
a surface decimation of ~3-mm separation (ico-5). I wonder whether
increasing the exponent would help in this regard.

Thanks for any advice.

Best regards,
Pavan

> Hi Pavan,
>
> If you want to try using mne_inverse_operator, your best bet is to read
> the script for mne_do_inverse_operator and feed it all of the details,
> which it normally would. That script adds details to the call of
> mne_inverse_operator, which are required inputs.
>
> Good Luck!
> D
> On 2011 Jun 13, at 14:08 , Pavan Ramkumar wrote:
>
>> Hi MNE users,
>>
>> Just a quick question regarding depth weighting. So far I have only
>> applied the default settings (weightexp = 0.8 and weightlimit = 10) but
>> I
>> would like to experiment a bit with these parameters.
>>
>> I tried to run 'mne_inverse_operator' identically to
>> 'mne_do_inverse_operator' from the command line but it always gives me
>> the
>> usage options (i.e. those that would be returned with the --help option)
>> irrespective of what command line options I specify.
>>
>> What am I missing? I am using version 2.6.1.
>>
>> Also, any comments on why the defaults were chosen as 0.8 and 10 would
>> be
>> helpful.
>>
>> Thanks and best regards,
>>
>> Pavan Ramkumar
>> Brain Research Unit
>> MEG Core
>> Low Temperature Laboratory
>> Aalto University School of Science
>> Espoo, Finland
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