[Eeglablist] Getting BIOSEMI 128-channel ABCD labels into the 10-20 system

Rafał Jończyk rafal.jonczyk at gmail.com
Wed Oct 13 03:54:15 PDT 2021

Dear Clement,

thank you! This indeed works great! Still, though, I haven't found all of
the labels for the 128-channel Biosemi system (I only have the labels for
64 channels). This is not a big issue, but it would be nice to have all of
the ABCD names re-labeled to follow the 10-5 electrode labels. If by any
chance anyone has worked with 128-channel BIOSEMI and knows the labels, I'd
be grateful (the 10-5 layout for 128-channel system in Fieldtrip does not
seem to correspond to the BIOSEMI layout...).

Dr Rafał Jończyk
Assistant Professor of Pragmatics
Faculty of English | Adam Mickiewicz University | Poland

Il giorno lun 27 set 2021 alle ore 20:26 Clement Lee <cll008 at eng.ucsd.edu>
ha scritto:

> Dear Rafal,
> Attachments generally don't make it through the EEGLAB mailing list so
> it's best to attach a link (e.g. after uploading to Google drive or other
> sharing site).
> I think I can help without seeing the picture though. One good way to
> rename channel names is using a script. I assume when you mention manually
> you have been using the "Edit Channel Info" GUI menu and clicking through
> one by one? Actually everything reflected in the EEGLAB GUI is stored in
> the `EEG` MATLAB variable. Channel labels are stored in
> `EEG.chanlocs.labels` and the syntax you want to use would be something
> like:
> [EEG.chanlocs.labels] = deal('Fz', 'Pz', 'Cz', ..., 'O2');
> where the right hand side argument for deal are the 128 channel names in
> order (e.g. in above example A1 is Fz and D32 is O2), comma separated and
> in string format. You would run that line in a script or in the command
> line after importing channel locations. To confirm the change worked you
> can either type `EEG.chanlocs.labels` into the command line, or view the
> channel info from the GUI as you have been.
> Hope that helps,
> Clement Lee
> Applications Programmer
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, UC San Diego
> 858-822-7535
> On Fri, Sep 24, 2021 at 9:04 AM Rafał Jończyk via eeglablist <
> eeglablist at sccn.ucsd.edu> wrote:
>> Dear all,
>> I'm aware that importing Biosemi channel locations has been a recurring
>> theme in the past on the list, and actually your insight has helped me a
>> lot to make it work for my data. However,  having imported the channel
>> file
>> (see the attached 2D plot image and the channel location file I've used),
>> I
>> still cannot come up with a quick and reliable method to rename the labels
>> (other than doing it manually?) so that they follow the 10-20 system.
>> Working with the ABCD system is odd and confusing.
>> Has anyone worked with 128-channel Biosemi data and found a reliable
>> solution to this issue?
>> Best,
>> Rafal
>> __________________________
>> Dr Rafał Jończyk
>> Assistant Professor of Pragmatics
>> Faculty of English | Adam Mickiewicz University | Poland
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.researchgate.net_profile_Rafal-5FJonczyk&d=DwIFaQ&c=-35OiAkTchMrZOngvJPOeA&r=kB5f6DjXkuOQpM1bq5OFA9kKiQyNm1p6x6e36h3EglE&m=VrKaUQKvpK9uH4AxIoo0oeHcYF0Ig72HjfOiqqIvnn8&s=02x-u_WiUHgVxiM6UBFTCLqF_t3rbJB4iFVmzxaRz70&e=
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