Yes you are right, the RF fields used by Thorsten Ritz et al (attached)
to disrupt the robin's compass, were of a specific frequency to resonate
with triplet spin state radical pairs in the cryptochromes in the eye.
We do not know nearly enough about cryptochromes in general from the
point of view of light or chemically induced radicals and therefore RF
in general. I was merely noting that some interesting progress has
been/is being made here.
On melatonin I'm with you. See a paper of mine with Russ Reiter
attached, although it is ELF.
That said, I'm not sure that cryptochromes and clock genes/melatonin are
entirely separate. The cryptochromes satify the urge of physicists of
being a PRIMARY MF/Biology interaction. I guess clock genes/melatonin
are more downstream into the biology.
However, I do take you point about the sun etc.
Good debate, let's keep it going.
Good wishes
Denis
-----Original Message-----
From: ANDREW GOLDSWORTHY
Sent: 29/03/2009 14:15
Subject: RE: Déclaration du 23 mars 2009 : Champs électromagnétiques et
santé
Hi Denis,
I agree completely with you about the importance of cryptochromes in
sensing the Earth's magnetic field for navigation. Their presence in the
eye could also give the animal a beautiful "heads up" display of the
magnetic field superimposed on its field of vision.
The problem I have with cell phones interfering with this is that it is
not obvious how an alternating signal from their antennas could change
the perceived direction of the DC magnetic field. Nor does it explain
why the animal cannot continue navigating by using the position of the
sun (which is the preferred method anyway).
However, there is an alternative explanation. We already know that weak
alternating electromagnetic fields can affect endogenous circadian
rhythms, which are under the control of the "biological clock". They
can, for example, upset the rhythmic production of melatonin.
But this clock is much more important to bees and birds navigating by
the position of the sun. They have to use it to compensate for the
changing angle of the sun throughout the day. If their clock is not
working properly, they could fly in the wrong direction and, in the case
of bees, never return to the hive. In the absence of anything better, my
advice to bee keepers would be to turn off their cell phones when
visiting their hives.
Best wishes
Andrew
--- On Sun, 29/3/09, Denis Henshaw wrote:
From: Denis Henshaw
Subject: RE: Déclaration du 23 mars 2009 : Champs électromagnétiques et
santé
Date: Sunday, 29 March, 2009, 12:27 PM
Sarah
Thanks
It is really good that this animal navigation in the Earth's magnetic
field stuff is starting to catch on. I hope to try to explain on
Thursday how & why this may apply to ES directly. The answer lies in the
cryptochromes which are not just present in the eyes of birds & other
species (including maybe cattle and deer) but in fact in all human body
tissues. Not that the latter have been shown to be EMF sensors, but then
no one has yet had chance to look....
Denis
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