Hello,
impedances of EEG electrodes can only be measured with the Neuromag
software while the subject is wired up to the MEG inside the MSR. This is
uncomfortable for the subject and can delay preparation time. One solution
would be to use a hand-held impedance meter to check impedances outside the
booth.
Ideally, we would like to be able to see impedances for all electrodes
simultaneously on a screen while preparing the subject, as is usually the
case for standard EEG measurements. I was wondering whether there is a
commercial system for that purpose (independent of EEG amplifiers), or
whether anyone has already come up with a DIY solution.
Regards,
Olaf
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Olaf Hauk
Medical Research Council
Cognition and Brain Sciences Unit
15 Chaucer Road
Cambridge, CB2 7EF
England
tel.: +44 (0) 1223 273702
fax: +44 (0) 1223 359062
email: [log in to unmask]
http://www.mrc-cbu.cam.ac.uk/
http://www.mrc-cbu.cam.ac.uk/EEG/
http://maia.mrc-cbu.cam.ac.uk/people/people-pages.php?id=57
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