Questions on sourceinterpolate after the sourcestatistics

[Robert Oostenveld]

Dear Feng,

I suspect that your computer is running out of memory while it is
trying to interpolate all functional volumes onto the anatomical MRI
grid. Instead of specifying

cfg.parameter = 'all'

I suggest that you only specify those parameters that you want to have
interpolated. The negclusterslabelmat volume for example is not one
that you want to have interpolated.

best regards,
Robert

On 12 Apr 2010, at 15:55, gao zai wrote:

> Dear all,
>
> I am now working on the sourcestatistics of the LCMV beamfomer.
> After finished the volumenormalisation, sourcegrandaverage and
> sourcestatistics, now I want to plot the t-values to the anatomical
> MRI. However, when I run the ft_sourceinterpolate (codes see below),
> I wait for hours and response with the matlab informing that
> "reslicing and interpolating negclusterslabelmat "
> --------------------------------------
> %%statistics on the grandaverage
> cfg=[];
> cfg.dim         = gs42.dim;
> cfg.parameter   = 'nai';
> cfg.method      = 'montecarlo';
> cfg.statistic   = 'depsamplesT';
> cfg.correctm    = 'cluster';
> cfg.numrandomization = 100;
> cfg.alpha       = 0.05;
> cfg.tail        = 0;
>
> nsubj=length(gs42.trial);
> cfg.design(1,:) = [ones(1,nsubj) ones(1,nsubj)*2];
> cfg.design(2,:) = [1:nsubj 1:nsubj];
>
> cfg.ivar        = 1; % row of design matrix that contains
> independent variable (the conditrions)
> cfg.uvar        = 2; % row of design matrix that contains subjects
> number-2 groups
>
> stat = sourcestatistics(cfg, gs42,gs50);
>
> sMRI = read_mri(fullfile(spm('dir'), 'canonical',
> 'single_subj_T1.nii'));
> cfg = [];
> cfg.downsample = 2;
> cfg.parameter = 'all';
> statplot = ft_sourceinterpolate(cfg, stat, sMRI);
> --------------------------------------------------------------------------------------
>
> Does anybody how to deal with it? Thanks a lot in advance.
>
> Best,
> FENG
> ----------------------------------
>
> The aim of this list is to facilitate the discussion between users
> of the FieldTrip toolbox, to share experiences and to discuss new
> ideas for MEG and EEG analysis.
>
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>
> http://www.ru.nl/fcdonders/fieldtrip/
>

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The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.