[FieldTrip] signal patch size measurement

[GEE Laura]

Hello everyone,

I am currently working on source reconstruction using minimum norm estimation (just like in the following tutorial https://www.fieldtriptoolbox.org/tutorial/minimumnormestimate/ ). I have managed to get to the visualization part and I am able to plot my source and the signal around it (see attached file).

I would like to measure the size of the patch. I thought about starting off by implementing a threshold (all cells with values above 50% of the source value would be put to 1 and the rest to 0) and then finding the furthest point away from the source (so by measuring the length between the source and each cell that is within the threshold and choosing the maximum length).

My questions are the following :


  *   Is there any function in the fieldtrip toolbox that already does this or something similar that will allow me to measure the size of the patch?
  *   If not, has anybody ever implemented something close to this and would be willing to share their thoughts/ideas?

Thank you in advance!
Laura

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