[Mne_analysis] MEG SNR

[Ghuman, Avniel (NIH/NIMH) [F]]

Hi Hari,

Thanks, I actually could use a reference to respond to a pesky reviewer if you know of one...

Best Wishes,
Avniel


On 11/9/10 5:30 PM, "Hari Bharadwaj" <hari at nmr.mgh.harvard.edu> wrote:

Hi Avniel,

Comparing the spectra of raw MEG with the spectra obtained from MEG
recorded with no subject (empty room data) if you have access to it might
not be a bad way to set the SNR values.

We use 3  for the SNR of unaveraged data. This seems to agree roughly with
the size of the spectra of resting state MEG and empty room MEG (atleast
upto 55 Hz). We have a triple shielded room though.

Regards,
Hari




On Tue, November 9, 2010 4:15 pm, Ghuman, Avniel (NIH/NIMH) [F] wrote:
> Hi Everyone,
>
> Does anyone know of a good reference regarding the approximate SNR of
> unaveraged neural activity measured by MEG?  I just need a ballpark
> estimate.  Many thanks in advance.
>
> Avniel Ghuman, Ph.D.
> Postdoctoral Research Fellow
> Laboratory of Brain and Cognition, NIMH
> 10 Center Drive
> Room 4C116, MSC 1366
> Bethesda, MD 20892-1366
>
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>
>
>


--
Hari Bharadwaj


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