[FieldTrip] source statistics within spatial ROIs

[Lin Wang]

Just want to follow up on my previous email: I just found a bug in my
script and I think the method that Haris used gives sensible results now.

Best,
Lin

On Thu, 30 Jan 2020 at 16:38, Lin Wang <wanglinsisi at gmail.com> wrote:

> Hi Fieldtripers,
>
> I'm trying to conduct cluster-based permutation test to source activation
> within anatomically pre-defined spatial ROIs.
>
> In the *ft_sourceanalysis* function, the cfg.roi doesn't seem to work. In
> an earlier post in the discussion list (
> https://mailman.science.ru.nl/pipermail/fieldtrip/2016-August/010835.html),
> Haris hacked it by replacing the activation values outside of the ROIs as
> NaN and setting up the "source.inside" field to contain the index values of
> the ROI voxels only.
>
> However, this method returns significant clusters for all spatial
> clusters, because the resulted values within result.posclusters.clusterstat
> are Inf.
>
> Is there another way to run the analysis?
>
> Thank you!
> Lin
>
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