[Eeglablist] a few issues with electrode locations

Andreas Widmann widmann at uni-leipzig.de
Thu May 20 07:34:34 PDT 2010


Hi Jasna,

> My problem is that once this is done, the new interpolated channels are 
> added to the top of the channel structure
Is it necessary to remove the channels? Not sure about EEGLAB built-in channel interpolation but in case spherical spline interpolation is an option you could use sphspline plugin, where you can just replace the channels without prior removing them. Marking bad channels and replacing should be possible in two script lines.

> Also, I want to include the locations for the four eye channels. I have 
> found in the EEGlab archive that Andreas Widmann has suggested to use 
> the Lo1, Lo2, So1 and So2 locations provided in a file from Robert 
> Oostenveld's blog. But the link doesn't work any more as the blog's been 
> reorganised. Could someone please re-post an updated link or post the 
> locations for these 4 channels?
           7         LO1         -42     0.65556     0.65616     0.59081    -0.46947          42         -28           1
           8         LO2          42     0.65556     0.65616    -0.59081    -0.46947         -42         -28           1
           9         SO1         -25     0.58333     0.87543     0.40822    -0.25882          25         -15           1
          10         SO2          25     0.58333     0.87543    -0.40822    -0.25882         -25         -15           1
          11         IO1         -27     0.69444     0.72987     0.37189    -0.57358          27         -35           1
          12         IO2          27     0.69444     0.72987    -0.37189    -0.57358         -27         -35           1

Best,
Andreas


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