On Fri, 20 Oct 1995, Sandra L Wegert wrote:
> On Thu, 19 Oct 1995, Steve Rogers wrote:
> > Hi. Can anyone explain why certain brain structures (e.g. substantia
> > nigra) contain the black pigment, melanin? Thanks in advance.
> > ****************************************************
> These are guesses based on something I read a long time ago, but forgot
> where:
> 1) Before mammals had a thick skull, light entered the brain, and there
> were pigmented sensory structures there that detected light and used that
> light info to synchronize diurnal rythyms. The pineal has been called
> the third eye for this reason in fish (I think).
Very interesting. Nerve cells and skin cells are related. Epidermal
growth factor hormore will cause nerve cells to divide. Skin is evolved to
protect nerve cells from light? Light effects the neurofiring rate
by raising the thermal chaos noise level? Thermal balance needs to
present through ALL nerve cells to do their job?
Ron Blue
