[Eeglablist] Huge challenge: Dipoles uncorrelated with components

[Curtis Bingham]

Why are my dipoles completely uncorrelated with independent components? 

In this image, you can see that the dipoles representing the components are almost entirely uncorrelated with the independent components. 
The dipole for IC 7 is the only dipole properly correlated with the underlying component
Dipoles for IC 2 and IC 9 are in opposite hemispheres from the components
The remaining dipoles are a LONG way away from their components. 
 

What would cause this extreme separation of dipole from independent component?

 

The EDF file is processed as follows: import, channel locations (10-20 or 10-05 locs file makes no difference) average reference, remove baseline, high and low-pass filter, runica, ICLabel, and delete rejected components. 

 

DIPFIT is run with Template BEM (MNI), no co-reg, autofit (RV%=100)

There is a warning in each pass saying “use cfg.headmodel instead of cfg.hdmfile” but that is built into the dipfit code. 

 

In this image you can see the DIPFIT plot with the RV% and TAL numbers:

 

 

I’ve used the same EDF dataset and tested eeglab 2019_0 against 2019_1, and within each of those trials, have tested DIPFIT 3.0 and 3.3, but haven’t been able to find any combination wherein the dipoles actually matched the components, most likely ruling out a version mismatch. 

 

What are we doing wrong? Can anyone shed some light on what might be happening and how we can attempt to further diagnose? 

 

Best regards,

Curtis