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Bug 3112 - kiel workshop issues - connectivity tutorial

Reported 2016-04-28 12:09:00 +0200
Modified 2016-06-17 15:56:47 +0200
Product: FieldTrip
Component: documentation
Version: unspecified
Hardware: PC
Operating System: Mac OS
Importance: P5 normal
Assigned to: Jan-Mathijs Schoffelen
Depends on:
See also:

Robert Oostenveld - 2016-04-28 12:09:58 +0200

On 28 Apr 2016, at 11:24, Cristiano Micheli wrote: *In the wiki the tutorial connectivity extended is replicable up to the last two pictures. Even if I download the mat files from ftp I wont be able to replicate a nice CMC between right hand EMG and motor. This was a bit disappointing...

Robert Oostenveld - 2016-04-28 13:13:31 +0200

We also did this tutorial in Nijmegen and I cannot remember any issues with it, also not towards the end. That may suggest it to be a user error (e.g. having done something inconsistent with the tutorial early on). @JM, did you notice any issues with this tutorial?

Jan-Mathijs Schoffelen - 2016-05-05 09:41:37 +0200

No I didn't. Cris, could you upload a figure? By the way, we did the 'normal' connectivity tutorial, not the extended one. Are they different?

Cristiano - 2016-05-05 17:54:07 +0200

(In reply to Jan-Mathijs Schoffelen from comment #2) Sure, you can find them here (last 2 pictures won't be replicated): Best C

Jan-Mathijs Schoffelen - 2016-05-09 09:12:54 +0200

Issue confirmed. Diagnostics performed. Verdict: the virtual channel positions were inputted in 'cm' (in a 2-dipole grid, without a specified unit), whereas the volume conduction model was specified in 'mm'. The automatic unit detection probably did not work well on the 'grid' and caused the incorrect positions to be used. I have updated the test-function to quickly run all code in the tutorial (the virtual channel stuff was not there), and will update the tutorial documentation with code that produces reproducible results.

Jan-Mathijs Schoffelen - 2016-05-09 09:19:03 +0200

This is now fixed on the wiki