[FieldTrip] Source statistics on spatio-temporal source reconstruction data (MNE)

Stephen Politzer-Ahles politzerahless at gmail.com
Mon Jun 24 20:29:01 CEST 2013

Hi Arjen,

Thanks, I also just tried that (after noticing that code in a later part of
the example) and can confirm that that change makes the plot come out like
the plot in the example. I updated the wiki accordingly.


> Message: 1
> Date: Mon, 24 Jun 2013 20:11:26 +0200 (CEST)
> From: "Stolk, A." <a.stolk at fcdonders.ru.nl>
> To: FieldTrip discussion list <fieldtrip at science.ru.nl>
> Subject: Re: [FieldTrip] fieldtrip Digest, Vol 31, Issue 27
> Message-ID:
>         <
331233946.1725662.1372097486678.JavaMail.root at sculptor.zimbra.ru.nl>
> Content-Type: text/plain; charset="utf-8"
> Hi Steve, With respect to the cube vs. brain-shaped grid; this seems to
be plotting-related? template_grid.inside in the snippet of code below
selects only the grid points that have been determined as inside the brain,
but with a negative inwardshift, hence it's also outside. ft_plot_mesh (
template_grid. pos ( template_grid. inside ,: ) ) ; % taken from the wiki
Hopefully someone else has up-to-date knowledge to answer your question
pertaining to the units (mm vs. cm) of the volume conductor and the source
model. Best regards, Arjen ----- Oorspronkelijk bericht -----
> > Van: "Stephen Politzer-Ahles" <politzerahless at gmail.com>
> > Aan: fieldtrip at science.ru.nl
> > Verzonden: Maandag 24 juni 2013 17:19:59
> > Onderwerp: Re: [FieldTrip] fieldtrip Digest, Vol 31, Issue 27
> > Hi everyone,
> > I recently tried
> >
> > and noticed some inconsistencies between the example code and the
> > results; I updated the code on the wiki but I wanted to send a message
> > to the list to double-check whether my changes are ok. Firstly, I had
> > to add a call to ft_convert_units, because otherwise the vol was
> > expressed in mm and the grid in cm, causing the grid to be much
> > smaller than the volume conductor (see http://i.imgur.com/gzct9Dm.png
> > ). Is this change ok?
> > The result I get is still not quite consistent with the examples shown
> > on that page, though; in my result, the grid is a cube (
> > http://i.imgur.com/NSgCFpg.png ), whereas in the example the grid is
> > brain-shaped. I used the same Fieldtrip brain template and the same
> > code from the example (except for the change above), so I'm not sure
> > if the difference is due to different plot settings, a change in the
> > Fieldtrip code since this example was made, or a change in the sample
> > brain included in Fieldtrip since the example was made.
> > Best,
> > Steve
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