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Re: acoustic foam and soundproofing
we would like to soundproof a small tactile stimulus delivery device.
it would be best if that material does not cause artefact in fMRI or
We have had good results with E.A.R. E-0-10-25 acoustic foam-barrier
BarrierComposites/index.asp?SID=187>. We've tried it in an fMRI
scanner - I don't think it caused any major artifacts; don't know about
MEG. See an unpublished poster from Human Brain Mapping 1999
<http://epl.meei.harvard.edu/~mer/HBM99posterhandout.pdf> and a more
recent paper: Ravicz et al., J. Acoust. Soc. Am. 109: 216–231 (2001).
How big is your device? How much isolation do you need? Are you
isolating your subjects from noise produced by the device, or the
device from the scanner noise? You may also want to consider a rigid
box, perhaps lined with absorbent foam. Materials like particle board
are good for reducing sound transmission.