Sourceplot!

[Ingrid Nieuwenhuis]

Hello Muthuraman,

	>How can i plot the source, i do not have any anatomical MRI at this
>moment? Is there a way to see the results from the source analysis
>using DICS in the structure of a normal topoplot

You can also plot your results without an MRI.
Since your source data is a volume (3 space dimensions and one functional
dimension) you can not plot it "in the structure a normal topoplot" (2 space
dimensions, one functional dimension). You can plot slices from your volume.

See the documentation on the new sourceplot function at the fieldtrip
webpage.

http://www2.ru.nl/fcdonders/fieldtrip/doku.php?id=fieldtrip:documentation:tu
torial:plotting

More info can also be found in the help of sourceplot.m

You cfg could for instance be:

Cfg.method = 'slice';
Cfg.funparameter = 'pow'; (or what ever it is that you want to plot in
color)

Good luck,

Ingrid

-----Original Message-----
From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
Of Muthuraman Muthuraman
Sent: Friday, February 23, 2007 3:14 PM
To: FIELDTRIP at NIC.SURFNET.NL
Subject: Re: [FIELDTRIP] Sourceplot!

Hello,

Thanks for the reply, i have plotted the headmodel plot for the 55
electrodes and attached it with this mail

The next step of using the source analysis with calculated grid works
without any problem,
i needed to adjust elec structure according to the radius of the volume
conduction model

How can i plot the source, i do not have any anatomical MRI at this moment?
Is there a way to see the results from the source analysis using DICS in the

structure of a normal topoplot

Thanking you

With regards
M.Muthuraman.



>From: Robert Oostenveld <r.oostenveld at FCDONDERS.RU.NL>
>Reply-To: FieldTrip discussion list <FIELDTRIP at NIC.SURFNET.NL>
>To: FIELDTRIP at NIC.SURFNET.NL
>Subject: Re: [FIELDTRIP] leadfieldmatrix!
>Date: Thu, 22 Feb 2007 18:12:13 +0100
>
>On 22 Feb 2007, at 17:21, Muthuraman Muthuraman wrote:
>
>>Warning: electrodes do not ly on sphere surface -> using projection
>>>In fieldtrip-20070109\private\eeg_leadfield4 at 60
>>  In fieldtrip-20070109\private\compute_leadfield at 435
>>  In prepare_leadfield at 209
>
>Electrodes of course should ly on the skin surface, that is the case  in
>the real world and it should also be the case in your model. Did  you plot
>the electrodes in combination with the sphere on which they  should ly? You

>can use headmodelplot for that.
>
>>%PLOTTING SOURCE
>>
>>cfg.location='interactive';
>>cfg.funparameter='source';
>>cfg.maskparameter='source';
>>sourceplot(cfg,source);
>
>Please update to the latest version of fieldtrip, the sourceplot  function
>has recently been improved. The documentation of sourceplot  explains how
>to use the funparameter and maskparameter. See also the  tutorial
>documentation. Your specification 'source' is certainly not  going to work,

>sice 'source' is not a source parameter.
>
>regards,
>Robert

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