[Eeglablist] troubleshooting

[Joseph Dien]

EGI's most current electrode coordinate files are age-normed, so you'd 
also have to specify the age range.  You might want to contact EGI 
customer support.  They're very helpful!  My EP Toolkit does come with 
the electrode coordinates already in .ced format as Arild says, but it's 
easy enough to do with EEGlab, once you have the .sfp file that you need.

Joe

On 1/29/25 12:33, Arild Hestvik via eeglablist wrote:
> Here is one 128 Hydrocel layout, but as Arnaud says, there are different
> versions, depending on when you bought it.
> [image: HCGSN_128_channel_map_plac_8403486-51.png]
>
> On Wed, Jan 29, 2025 at 11:42 AM Arnaud Delorme via eeglablist <
> eeglablist at sccn.ucsd.edu> wrote:
>
>> Dear Kevin,
>>
>> The electrodes file is in eeglab/sample_locs/GSN128.sfp.
>> Note that there are multiple versions of the 64-channel caps. I am not
>> sure about the 128-electrode one.
>> Also, GSN128 should be automatically detected when you import the file.
>>
>> Best wishes,
>>
>> Arno
>>
>>> On Jan 29, 2025, at 05:24, Kevin La Monica via eeglablist <
>> eeglablist at sccn.ucsd.edu> wrote:
>>> Good morning,
>>>
>>> I am a psychiatry resident from University of Milan, currently learning
>> to analyse data with the EEGLAB software for a project in collaboration
>> with the university of Ghent.
>>> We seem to have trouble with acquiring the channel locations and neither
>> the tutorials on youtube nor the eeglab tutorial offered by the software
>> nor chatgpt can help us.
>>> Basically we can't find a file for the channel locations of the gsn128
>> cap, not even from the samples given.
>>> Could you assist us with the process?
>>> Thank you very much.
>>>
>>>
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--------------------------------------------------------------------------------

Joseph Dien, PhD
Senior Research Scientist
Department of Human Development and Quantitative Methodology
University of Maryland, College Park
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