[FieldTrip] BrainProducts Easycap layout

[Hwee Ling Lee]

Dear all,

Thanks for the suggestions. For Jörn, I checked the
Fieldtrip/template/layout, but none of them fits my data. I tried the
suggestion from Herring, however, I keep getting an error message:
Error using ft_convert_units (line 121)
cannot determine geometrical units

Error in ft_datatype_sens (line 189)
      sens = ft_convert_units(sens);

Error in ft_read_sens (line 331)
sens = ft_datatype_sens(sens);

 I had my data in a text format previously, and it didn't work either. So
I'm not sure what to do!

I've attached my file in this email, the values are gotten from the pdf
info from Easycap regarding the theta/phi coordinates for each site.

Thanks!

Cheers,
Hweeling



On 22 January 2014 16:00, Herring, J.D. (Jim) <j.herring at fcdonders.ru.nl>wrote:

> Hi Hweeling,
>
>
>
> If you create a text-file that has three columns: Label, Theta, and Phi
> coordinate, you can use elec = ft_read_sens(filename) to read the layout
> into a fieldtrip useable elec structure.
>
>
> The first line of the text file has to be:
>
>
>
> Site Theta Phi
>
>
>
> You can also have a look at easycap-M1.txt and easycap-M10.txt in the
> fieldtrip/template/electrode folder for an example of how the text-file
> should look like.
>
>
>
> The theta and phi coordinates will be converted to 3d coordinates assuming
> a head-radius of 85mm (by default, you can specify this)
>
>
>
> Best,
>
>
>
> Jim
>
>
>
> *From:* fieldtrip-bounces at science.ru.nl [mailto:
> fieldtrip-bounces at science.ru.nl] *On Behalf Of *Hwee Ling Lee
> *Sent:* woensdag 22 januari 2014 15:42
> *To:* FieldTrip discussion list
> *Subject:* [FieldTrip] BrainProducts Easycap layout
>
>
>
> Dear all,
>
>
>
> I would like to know if anyone has the layout for 128 EEG channels for
> BrainProduct easycap.
>
>
>
> I have the information of the theta/phi coordinates for each of the
> channels, but I'm not sure how to use these values to create the layout in
> fieldtrip.
>
>
>
> It'll be great if someone can help me on this!
>
>
>
> Thanks.
>
>
>
> Best regards,
>
> Hweeling
>
>
>



-- 
=================================================
Dr. rer. nat. Lee, Hwee Ling
Postdoc
German Center for Neurodegenerative Diseases (DZNE) Bonn

Email 1: hwee-ling.lee<at>dzne.de
Email 2: hweeling.lee<at>gmail.com

https://sites.google.com/site/hweelinglee/home

Correspondence Address:
Ernst-Robert-Curtius Strasse 12, 53117, Bonn, Germany
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