[Eeglablist] dipfitting for egi: how to align channels

[Arnaud Delorme]

Dear Lucy,

the problem is that your channel labels are not recognized by the coregistration program (it only recognized 10-20 channel labels). Therefore, you cannot use the automated method for aligning your montage with the model. You have to do it manually or use fiducials if you have them.
Best,

Arno

On Jul 20, 2011, at 6:55 PM, Lucy McGarry wrote:

> Hi all,
> 
> I am having a problem properly aligning my channels when I try to use the dipfitting procedure for my 128 channel EGI cap.  
> 
> I have automatically located channels for EGI using "warp montage" and the MNI model, but after doing this, all the green channels end up clustered around CZ.  Aligning fucidials does not seem to change anything.  Has anyone else had this problem? 
> 
> I'm not sure what entries to use in the fields at the bottom of the coregistration window, that will optimally make the green electrode icons correctly circle the head.  I tried entering numbers that made the image look as though the electrodes were circling the head, but then when I plot my dipoles, they end up all clustered across the centre of the head.  Does anyone have any suggestions?
> 
> Thanks very much,
> Lucy
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