[FieldTrip] Fw: Template 3D electrode set for Brain Products' acticap 64ch standard

[Carolina Ogawa]

Dear community,

I am trying to use the function "ft_channelrepair", but I can't figure out
how to configure the EEG electrodes position.

The EEG cap I used is the "Acticap 64ch standard".

I suppose it would work like this:

cfg.elec                 = ft_read_sens(filename);

data_after_interpolation = ft_channelrepair(cfg, data_before_interpolation);


in which "filename" = template 3D electrode set available on <
https://github.com/fieldtrip/fieldtrip/tree/master/template/electrode>.
There is no template available for the "Acticap 64ch standard" on the
mentioned website, though.

Then, I thought it would be valid editing the "easycap-M1.txt" template
(which is available), and transforming it into the "Acticap 64ch standard",
which apparently would involve deleting 8 channels and renaming two, as
described on <
http://www.fieldtriptoolbox.org/template/layout/#acticap-64ch-standard2mat>.

However, I don't know how can I do this and I'm not sure if this would be
the proper way to solve this.

Can someone please tell me:
1. If this solution would be valid or if there is any other way to solve
this?
2. In case it is valid, do I have do I have to download the
"easycap-M1.txt" file, convert it into a ".m" file and then edit it?


Thank you in advance!

On Wed, Jul 24, 2019 at 8:02 AM Shephard, Elizabeth <
elizabeth.1.shephard at kcl.ac.uk> wrote:

> Carol, I think you do have to edit the EasyCap layout - you download it,
> keep it as a .txt file, and just edit the text file. Then when you call
> cfg.elec just make sure you are directing fieldtrip to this edited file.
> This is what I did with 64Ch Brain Vision data when I needed to call the
> electrode positions - you will need to do this again during cluster-based
> permutation testing so worth having the file ready now
>
>
> ------------------------------
> *From:* fieldtrip <fieldtrip-bounces at science.ru.nl> on behalf of Carolina
> Ogawa <carolyogawa at gmail.com>
> *Sent:* 23 July 2019 22:12
> *To:* fieldtrip at science.ru.nl <fieldtrip at science.ru.nl>
> *Subject:* [FieldTrip] Template 3D electrode set for Brain Products'
> acticap 64ch standard
>
> Dear community,
>
> I am trying to use the function "ft_channelrepair", but I can't figure out
> how to configure the EEG electrodes position.
>
> The EEG cap I used is the "Acticap 64ch standard".
>
> I suppose it would work like this:
>
> cfg.elec                 = ft_read_sens(filename);
>
> data_after_interpolation = ft_channelrepair(cfg, data_before_interpolation);
>
>
> in which "filename" = template 3D electrode set available on <
> https://github.com/fieldtrip/fieldtrip/tree/master/template/electrode
> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Ffieldtrip%2Ffieldtrip%2Ftree%2Fmaster%2Ftemplate%2Felectrode&data=01%7C01%7Celizabeth.1.shephard%40kcl.ac.uk%7C884e368c63dd4f5a176b08d70fb9199c%7C8370cf1416f34c16b83c724071654356%7C0&sdata=8twyT5Q71yDZhhPR0AzjWvTeK%2BcEFO0Ev%2FpRJQv6YkM%3D&reserved=0>>.
> There is no template available for the "Acticap 64ch standard" on the
> mentioned website, though.
>
> Then, I thought it would be valid editing the "easycap-M1.txt" template
> (which is available), and transforming it into the "Acticap 64ch standard",
> which apparently would involve deleting 8 channels and renaming two, as
> described on <
> http://www.fieldtriptoolbox.org/template/layout/#acticap-64ch-standard2mat
> <https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.fieldtriptoolbox.org%2Ftemplate%2Flayout%2F%23acticap-64ch-standard2mat&data=01%7C01%7Celizabeth.1.shephard%40kcl.ac.uk%7C884e368c63dd4f5a176b08d70fb9199c%7C8370cf1416f34c16b83c724071654356%7C0&sdata=jN2AvJIsXuhjM%2Fi4vSPu%2BmHdVo%2FTxcuUSpR3Gq7YF18%3D&reserved=0>
> >.
>
> However, I don't know how can I do this and I'm not sure if this would be
> the proper way to solve this.
>
> Can someone please tell me:
> 1. If this solution would be valid or if there is any other way to solve
> this?
> 2. In case it is valid, do I have do I have to download the
> "easycap-M1.txt" file, convert it into a ".m" file and then edit it?
>
>
> Thank you in advance!
>
> Carolina Ogawa
>
>
>
>
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