From: Robert J. Bradbury (bradbury@aeiveos.com)
Date: Tue Sep 03 2002 - 14:06:35 MDT
On Tue, 3 Sep 2002, gts wrote:
> Robert,
>
> Have you tried full spectrum lighting? I do not suffer from SAD but I
> nevertheless have two full spectrum lamps in my home. These lamps are
> designed to produce light identical to that from the sun. As you
> probably know, SAD is thought to caused at least in part by
> under-exposure to sun light.
No (re: f.s.l.) and yes (re: under-exposure) -- I don't think full spectrum
does the trick (I had it specially installed [or at least as close as one can
get with fluorescents] at my previous corporate offices.) If its
simple "under-exposure" then its lux that counts. I found an
interesting source for solutions in this respect:
http://www.lighttherapyproducts.com/
I'm going to have to look at those more closely.
I think the receptor (at least in the eye) that serves as the signal
initiator for this pathway has only been isolated within the last year
[no ref close at hand]. I don't think we know its spectral response
characteristics yet (my guess would be it prefers yellow). If it has
a preference we could probably devise an LED system with much lower
power consumption than the current full spectrum/halogen solutions.
Re: the other suggestions -- thanks -- I will investigate them some more.
Robert
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