[FieldTrip] CTF MEG current phantom

[Andreas Wollbrink]

Hi Inna,

did you detect the intefering signal in the reference channels as well?

How do the MEG sensor signals behave for different noise balancing 
settings (different synthetic gradiometer orders)?

Cheers,
Andreas

On 01/29/13 19:46, McGowin, Inna wrote:
> Hi Andreas,
> The problem is that there are no cables or connecters used for the noise
> test study I did on the phantom.
> Just the phantom... It seems it has some magnetic contamination and
> creates a signal due to vibration.
> My next step is to clean thoroughly the phantom, inside and outside, and
> see will it help.
> Thanks,
> Inna
>
> On Tue, Jan 29, 2013 at 2:21 AM, Andreas Wollbrink <a.wollbrink at wwu.de
> <mailto:a.wollbrink at wwu.de>> wrote:
>
>     Hi Inna,
>
>     did you fixate the cables and connectors of the Current Phantom?
>     Are the cables twisted?
>
>     Andreas
>
>
>     On 01/28/13 19:59, McGowin, Inna wrote:
>
>         Yes,
>         I run all kind of scans: noise test (good), disconnected phantom
>         (noisy), phantom with dipole removed (noisy), phantom with saline
>         solution removed (noisy); dipole alone (good), saline alone (good).
>
>         Below is the snapshot for Phantom with no saline solution or dipole:
>         Thanks.Inline image 1
>
>
>
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>     --
>
>     ==============================__==============================__==========
>
>        Dipl.-Ing. Andreas Wollbrink, Biomedical Engineer
>
>        Institute for Biomagnetism and Biosignalanalysis
>        Muenster University Hospital
>
>        Malmedyweg 15         phone: +49-(0)251-83-52546
>     <tel:%2B49-%280%29251-83-52546>
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>                              e-Mail: a.wollbrink at wwu.de
>     <mailto:a.wollbrink at wwu.de>
>
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>
>
>
> --
> Inna McGowin
>
>
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-- 

======================================================================

   Dipl.-Ing. Andreas Wollbrink, Biomedical Engineer

   Institute for Biomagnetism and Biosignalanalysis       	
   Muenster University Hospital

   Malmedyweg 15         phone:   +49-(0)251-83-52546
   D-48149 Muenster      mobil:   +49-(0)160-98527553
   Germany               fax:     +49-(0)251-83-56874	
                         e-Mail: a.wollbrink at wwu.de

======================================================================