I have a question
johnh at faraway.hgmp.mrc.ac.uk
Thu Dec 30 06:09:16 EST 2004
Did a quick search on Fontana and Buss, they're still pushing that bus so if
you're still interested in standing behind it ...
Proceedings of the National Academy of Sciences, Vol 91, 757-761, Copyright
© 1994 by National Academy of Sciences
What Would be Conserved if "the Tape were Played Twice"?
W Fontana and LW Buss
We develop an abstract chemistry, implemented in a -calculus-based modeling
platform, and argue that the following features are generic to this
particular abstraction of chemistry; hence, they would be expected to
reappear if "the tape were run twice": (i) hypercycles of self-reproducing
objects arise; (ii) if self-replication is inhibited, self-maintaining
organizations arise; and (iii) self-maintaining organizations, once
established, can combine into higher-order self-maintaining organizations.
"Michael Olea" <oleaj at sbcglobal.net> wrote in message
news:BDF8B7C2.E471%oleaj at sbcglobal.net...
> in article 41d36b5a at dnews.tpgi.com.au, John Hasenkam at johnh at faraway.
> on 12/29/04 5:59 PM:
> > There is a very rare condition when a person can no longer perceive
> > movement, only see a series of still shots. Don't know the name of the
> > condition, probably related to damage to the visual - parietal areas
> > (ventral stream?).
> Ramachandran, in "Phantoms in the Brain" refers to it simply as "motion
> blindness". He discusses the case of a Swiss woman who had bilateral
> to MT.
> > <behdadm at gmail.com> wrote in message
> > news:1104189924.193906.161060 at z14g2000cwz.googlegroups.com...
> >> Hi,
> >> I think you are wrong.
> >> "Handbook of Perception and Human Performance" page 16-8:
> >> "It is sometimes mistakenly claimed that the peripheral retina is more
> >> sensitive to motion than the fovea. In fact the threshold of motion
> >> increases steadily with eccentricity"
> >> Although the rods are more sensitive to motion than cones, there are
> >> many other factors that can influence the motion sensitivity of fovea
> >> and other parts of field of view. For example, each receptor is
> >> connected to one ganglion cell in the fovea, but at the periphery 25
> >> receptors are connected to 1 ganglion.
> >> What is your reference?
> >> Sorry but I didn't understand the meaning of "AoK, Ap6".
> >> Thanks
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