From: Joerg Hansmann (info_at_jhansmann.de)
Date: 2001-09-21 00:21:14
Hi,
----- Original Message -----
From: Gröbminger Gerd <groebminger_at_bmt.tu-graz.ac.at>
To: <buildcheapeeg_at_yahoogroups.com>
Sent: Thursday, September 20, 2001 7:53 PM
Subject: [buildcheapeeg] Electrode Drift.
> Hi everyone!
>
> Can anybody tell me, how you solved the problem with the drift of the
> electrode's potential? When you measure EEG-Signals with Voltage:
> 0.005-0.6 mV and Frequencies: 1-100 Hz, these problems occur, or not?
How do I see, that a problem with electrode's potential drift exists ?
I am using commercial pure silver electrodes with 10/20 paste wax.
The only thing I could notice in my experiments were artifacts due to
mechanical pressure on the electrodes.
> Is there some guide on the page, where you attend this topic?
Until now I have not been aware that there could be a problem.
I thought electrode potential drift were an effect at DC or very low
frequencies.
Can you provide more information ?
Regards,
Joerg
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