[Eeglablist] Channel Locations for BioSemi

[Enzo Brunetti]

Hi Vincent,

Are you plotting channels' location in 2D or 3D?
When you plot channels' maps in 2D, depending on their locations, some electrodes could be expanded 'out of head' to show their spherical coordinates in a flat 2D map.
I don't know if this is the case of your maps.

Can you send an image of the channel location maps you are getting?

Best,


El 06-08-2013, a las 10:43, Vincent LeBlanc <leblvin at gmail.com> escribió:

> Hi Enzo!
> If I keep the original labels, it can't find any coordinates. If I set the labels to FP1, FP3 etc. instead of A1, A2, etc., I do get coordinates. However, when I plot their location, some of the channels are off the head. Is that simply an effect of not having a 3D map of their localisation? 
> 
> 
> 2013/8/5 Enzo Brunetti <enzo.brunetti at gmail.com>
> Hi Vincent,
> 
> eeglab's plugin 'dipfit' offers some head montages including some Biosemi common layouts. When you use Edit/Channel locations, the displayed window offers you to look up the corresponding coordinates for the labels present in the .bdf file. Try clicking 'Ok' in this window to see if it helps you.
> 
> Good luck.
> 
> 
> El 05-08-2013, a las 13:51, Vincent LeBlanc <leblvin at gmail.com> escribió:
> 
>> Hi to all!
>> 
>> I've been trying to correctly enter the BioSemi coordinates into eeglab, to no avail. Using the excel sheet on their website (http://www.biosemi.com/download/Cap_coords_all.xls) gives me absurd results when plotting the channel positions.
>> I'm using the 64 electrodes cap. Does anybody have a clue on where/how I could get those coordinates?
>> 
>> Thanks in advance =)
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