Magnetic signals could cure chronic insomnia

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Karim @ May 3rd 2007 11:17AM

Most of the papers I've seen on TMS mention fields of 2-3 Tesla, which is higher than most MRI machines (~1.5 Tesla).

Accidents involving MRI machines have had office furniture FLYING across rooms:

http://www.nytimes.com/2005/08/19/health/19magnet.html?ex=1282104000&en=d39f1b92e0056844&ei=5088&partner=rssnyt&emc=rss

While I don't know the field strength of the equipment used by this researcher, in general I would not characterize the fields being used as "weak" :-)

Neutral

mapin @ May 3rd 2007 12:08PM

yep, not weak, just brief. the tms pulse only lasts a few milliseconds at most, but it is quite strong (2-3 Tesla). As a brain researcher, I've been tms-ed before, it's a lot of fun watching your hand twitch when they stimulate your motor cortex.

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