Olimex Support Forum

Others => Biofeedback - EEG, ECG, EKG => Topic started by: dinaj on February 16, 2013, 10:45:22 pm

Title: Can Olimex active electrodes be used with other EEG amplifiers?
Post by: dinaj on February 16, 2013, 10:45:22 pm
Hi,

I was wondering if the Olimex active electrodes could be used with other EEG amplifiers, and if so, would I need to use a certain number of active electrodes but also include a passive one, for the ground signal?  I may have an opportunity to purchase a used Stellate EEG system and am unsure whether your active electrodes may be used with other systems like Stellate or Nicolet.  I am debating whether to purchase the used hospital EEG system or a couple of Olimex EEG SMTs.  I am very new to this and greatly appreciate any feedback you can provide.

Kind regards,

Dina
Title: Re: Can Olimex active electrodes be used with other EEG amplifiers?
Post by: LubOlimex on February 18, 2013, 01:43:51 pm
Hey Dina,

The active electrodes work at 5V and follow the layout here: https://www.olimex.com/Products/EEG/Electrodes/EEG-AE/resources/EEG-AE.pdf (https://www.olimex.com/Products/EEG/Electrodes/EEG-AE/resources/EEG-AE.pdf). Generally our EEG-SMT devices are more of a hobbyist electronics tool (despite packing good accuracy) than professional hospital equipment. The devices you mentioned tend to be in the second category.

Best regards,
Lub/OLIMEX
Title: Re: Can Olimex active electrodes be used with other EEG amplifiers?
Post by: ellecieffe on May 01, 2013, 04:42:58 am
QuoteThe active electrodes work at 5V

Hi, sorry for the trivial question.
It is possible to use AE at 3.3V ?
Title: Re: Can Olimex active electrodes be used with other EEG amplifiers?
Post by: LubOlimex on May 01, 2013, 08:37:22 am
Hey ellecieffe,

QuoteIt is possible to use AE at 3.3V ?

It is not recommended. There are ways to make them work - among those: driving the 5V from the EEG-SMT to 3.3; providing external supply for the AEs. Still I think this is not a justified effort.

Best regards,
Lub/OLIMEX