[FieldTrip] Parcellate the reconstructed source time series

[Schoffelen, J.M. (Jan Mathijs)]

Could you be a bit more specific in your question? Right now, based on the quality of your question, it seems as if you haven’t spent much time searching the documentation yourself. For instance, http://www.fieldtriptoolbox.org/tutorial/networkanalysis/ would already give you some directions how to ‘parcellate’ your source level data. Also, if you look for ‘ft_sourceparcellate’ you’ll probably be able to sort out how to do it.

Jan-Mathijs


On 22 Feb 2019, at 14:51, Neeraj kumar <neeraj750kumar at gmail.com<mailto:neeraj750kumar at gmail.com>> wrote:

Dear Schoffelen,

Thank you for your answer. But I'm still confused about how to get parcellated source time series in fieldtrip. I have  1sec time series for around 6000  grids.

Neeraj

On Fri, 22 Feb 2019 at 17:46, Schoffelen, J.M. (Jan Mathijs) <jan.schoffelen at donders.ru.nl<mailto:jan.schoffelen at donders.ru.nl>> wrote:

I want to parcellate the reconstructed source time series (~ 1000ms).
I have moments in source.avg.mom for around 6000 grids.
Additionally, do I need to perform some normalization on time series before or after parcellation to perform network analysis?

Well, at least you should compute a metric between pairs of time series that can be subjected to a network analysis. Whether or not this needs ‘some normalization’ depends on what you exactly want to achieve.

Best wishes,
Jan-Mathijs





J.M.Schoffelen, MD PhD
Senior Researcher, VIDI-fellow - PI, language in interaction
Telephone: +31-24-3614793
Physical location: room 00.028
Donders Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands



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