smoothing sensor data

[Vladimir Litvak]

Dear Ingrid,

You can do your whole analysis in SPM where you can export your
sensor-level data to images and smooth it. But then there is no way
back to Fieldtrip statistics.

Best,

Vladimir

On Tue, Nov 4, 2008 at 4:19 PM, Ingrid Nieuwenhuis
<ingrid.nieuwenhuis at fcdonders.ru.nl> wrote:
> Hi everyone,
>
>
>
> Did anyone try smoothing single-subject data on sensor level before? In
> source-space I noticed that smoothing my single subjects (MEG)data made the
> GA-statistical analysis more sensitive because the source-locations were a
> bit shifted over subjects (MEG spatial resolution apparently isn't that bad
> after all ;) ). There I used a spm_smooth function on my volume data. But
> now I want to try the same on sensor level, I have pretty focal blobs, and
> cluster-analysis "looses" the cluster over time in the GA.
>
>
>
> Now I wonder how to do this. I could use the sensor locations in the grad
> and then adjust the values according to distance in 3D space. Before making
> this myself I was just wondering if anyone already made code to do the same.
> Ideas on how to do it are also much appreciated ;)
>
>
>
> Best regards,
>
> Ingrid
>
>
>
> ___________________________________
>
> Ingrid Nieuwenhuis
>
> PhD student
>
> Donders Institute for Brain, Cognition and Behaviour,
>
> Centre for Cognitive Neuroimaging
>
> Radboud University Nijmegen, The Netherlands
>
> Email: ingrid.nieuwenhuis at fcdonders.ru.nl
>
> Tel: 0031 (0)24 - 36 10887
>
>
>
> ----------------------------------
>
> 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.
>
> http://listserv.surfnet.nl/archives/fieldtrip.html
>
> http://www.ru.nl/fcdonders/fieldtrip/

----------------------------------
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/fcdonders/fieldtrip.