Question about electrical shielding

[Katrin Krumbholz <katrin@xxxxxxxxxxxxx>]

Dear All, 

we may be looking to buy a new sound-booth soon, which we want to use for
EEG and which should thus have "electrical shielding". I have asked IAC and
they said they build electrically shielded booths, but I am not sure whether
they would be the best. Thus I wonder whether anybody could give me any
advice on the following two questions:

(i) Which company would you recommend us to approach?
(ii) What do you think are the requirements in terms of shielding for EEG? A
norm published by the German Association for Electrical, Electronic &
Information Technologies (VDE) says that noise levels should not be higher
than Bpp (peak-to-peak amplitude of magnetic field) < 2e-7 T. However, some
people seem to think that that limit is too lenient. 

Any advice would be gratefully received. Many thanks in advance, and Happy
Xmas!!! Katrin 

Dr Katrin Krumbholz
MRC Institute of Hearing Research
University Park
NG7 2RD Nottingham

Phone: +44 (0)115 922 3431
Fax: +44 (0)115 951 8503



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