[FieldTrip] Best EEG electrode positioning system?

[Julian Keil]

Hi Markus,

in our setup, we mount the source on a tripod that is positioned behind the subject. We then attach the reference sensor to the forehead (this corrects for movements of the subject) and mark the single electrodes with the stylus. Thus, the head of the subject does not need to be fixed, as long as the source is not moved.

I'm not sure what is included in the 2800 $ but here's what we use:
* Polhemus Patriot
* 1x Stylus (Sensor 1)
* 1x Reference (Sensor 2)
* 1x Source
* Serial Cable
Additionally we use:
* Serial-to-USB Converter
* BrainStorm Toolbox for Matlab (Free after registration from: http://neuroimage.usc.edu/brainstorm/)

The Polhemus Software (I think it's included) can be useful for basic troubleshooting, such as checking if there is a connection to the PC, but is not needed otherwise.

Cheers,

Julian

Am 29.08.2016 um 21:57 schrieb Markus Gschwind:

> Hi Julain,
> 
> Thanks for that input.
> 
> With the Polhemus Patriot you install the subject in a chair, with the head fixed, and check manually the position of all the electrodes with a sensor, right?
> 
> On their website it says 2.800 USD for the patriot. Is this all we would need or is there more to buy with it? Is there any proprietary software to buy?
> 
> Thanks in advance!
> Best, Markus
> 
> 
> 
> 
> 
> 2016-08-29 17:02 GMT+02:00 Julian Keil <julian.keil at gmail.com>:
> Dear Markus,
> 
> we use the Polhemus Patriot together with the BrainStrom toolbox for our 128-channel EEG caps.
> Once you get it set up and all quirks worked out (e.g. using a serial-to-USB converter instead of just the USB-connection), it works quite fast and without problems.
> I'd say it takes no more than 10 minutes per subject.
> 
> Let me know if you need more info,
> 
> Julian
> 
> Am 29.08.2016 um 16:54 schrieb Markus Gschwind:
> 
>> Dear EEGers,
>> 
>> We would like to get in contact with people having experience with electrode positioning systems,which can be used in a reasonable amount of time (especially with patients), and on high-density caps (we use EGI 256 channels).
>> 
>> We came across the Zebris system
>> http://www.zebris.de/english/medizin/medizin-elektroden-positionierung.php
>> 
>> Is there anyone who has experience with this?
>> 
>> Thank you in advance,
>> Best,
>> Markus
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> 
> 
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