>Is there anyone who has experience with impedance checking EEG electrodes,
>and could help to redesign a low-noise front end for medical purposes
>(signals in the low microvolt range). The system we have has a million
>Megaohm (10^12) input impedance, 130dB CMRR, and 12 bit resolution
>
>Craig Webb

I would be very interested in this too!!

Octavio
======================================================
Octavio Nogueira  - e-mail:   nogueira@mandic.com.br
http://www.geocities.com/~oct_nogueira
"ProPic" Production PIC Programmer Windows under US$20
======================================================