[FieldTrip] layout file from beamformer

[Tyler Grummett]

Hey Julian,

That sounds good, it would be awesome if you could give me an example.

Also though, what are the steps of using ft_prepare_layout with beamformer data. I am away it gives you permissions, but how do you enter that into ft_prepare_layout.

This is only for using in trentool, otherwise I would be using your method

Tyler


On 23 May 2014, at 4:40 pm, "Julian Keil" <julian.keil at gmail.com<mailto:julian.keil at gmail.com>> wrote:

Dear Tyler,

I recently had a similar problem.

I solved this by plotting the x,y,z-coordinates of all dipoles within the BEM-Model and assign a color value depending on the power value to the dipole markers.

In short: use ft_triplot to plot the mesh of the BEM. Then select the .pos-field of the dipoles inside your volume and plot them with plot3.
In the plot3-step, you can assign each dipole a 'Color'-property based on your power or stats value.

Alternatively, you can use ft_prepare_layout to get a planar projection of your sources, but at least in my case it did not look too good.

Hope that helps, if you want to, I can send you an example of what the plots look like.

Best,

Julian

Am 23.05.2014 um 04:10 schrieb Tyler Grummett:

Hello fieldtrippers,

I am trying to create a layout file that has the positions of the beamformer sources.

The output of my beamformer analysis was 1400 channels and I am trying to create a layout file with certain position which correspond to certain sources.

For example, if I wanted to plot 30 sources and all I had were the x y z position.

I am hoping that this made sense, I cant quite work out what I should be asking for. I have worked out how to plot the power of the sources, but
ft_topoplotIC is asking for a layout file (after I ran an ICA over it), which I cant work out how to make.

Tyler

*************************

Tyler Grummett ( BBSc, BSc(Hons I))
PhD Candidate
Brain Signals Laboratory
Flinders University
Rm 5A301
Ext 66124
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