[FieldTrip] CTF MEG current phantom
Andreas Wollbrink
a.wollbrink at wwu.de
Wed Jan 30 11:27:32 CET 2013
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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> --
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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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>
> --
> 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
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