[Eeglablist] Channel Locations for BioSemi

[Vincent LeBlanc]

Hi Makoto,

You can set those channel names in your biosemi config file. That saves a
lot of time.
As for me, I'm using 10-20 so I'm not sure of how that translates to 10-5.
Good luck =)


2013/8/12 Makoto Miyakoshi <mmiyakoshi at ucsd.edu>

> Dear Vincent,
>
> > If I set the labels to FP1, FP3 etc. instead of A1, A2, etc., I do get
> coordinates.
>
> Yes, this is what I experienced too. I guess 'pair channels' does not work
> if you have non 10-5 channel names.
>
> So my personal solution for this kind of dataset is that you chose 5
> closet channels (Fz -> ??, Cz -> ??, Pz->??, T7->??, T8->??) and rename
> them into 10-5 names. Then warp montage using these renamed channels. This
> is an ugly solution but it still works and better than nothing.
>
> Makoto
>
> 2013/8/6 Vincent LeBlanc <leblvin at gmail.com>
>
>> 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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>>
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>
>
>
> --
> Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>
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