OT: Colors and Colours, perception of (was Re: rl02 disks

On Fri, Dec 23, 2011 at 22:30, Fred Cisin <cisin at xenosoft.com> wrote: Look up 'melatonin' and blue light via the Famous Web Search Engine and there's lots of stuff. One is here: http://www.denvernaturopathic.com/bluelightandmelatonin.htm and there are others, but it's maybe a good idea to not only read the popular-press versions.. it's more complicated than that. There are a number of studies which show that it's not as easy as 'see some blue light = your nocturnal period is disrupted' as would be the conclusion http://www.mendeley.com/research/indirect-blue-light-does-not-suppress-noct… says something about that, and the papers it refers also seem to (from a casual glance) to say that it's not as simple as 'blue=awake'. The interesting thing though is the discovery that there are indeed blue-sensitive receptors in the eye which are independent of the other three receptors and is only about detecting the existence of bluish light, and its purpose seems to about resetting/syncing the bodyclock cycle. -Tor