Re: Evolution of Depression

On Sat, 31 May 2008 13:42:14 -0700, Bob Casanova <nospam@xxxxxxxx>
wrote:

On Fri, 30 May 2008 18:44:05 -0400, the following appeared
in talk.origins, posted by r norman
<r_s_norman@xxxxxxxxxxxx>:

On Fri, 30 May 2008 15:16:06 -0700, Bob Casanova <nospam@xxxxxxxx>
wrote:

On Thu, 29 May 2008 21:04:09 -0400, the following appeared
in talk.origins, posted by r norman

<snip>

<r_s_norman@xxxxxxxxxxxx>:

...from my perspective as a neurophysiologist (though
one dealing with invertebrate brains, not human neurology).

Just as an aside, that specialty seems to make you
especially qualified to respond to some posters in t.o (not
Vernon, but I'm sure you can think of examples). ;-)

The octopus is actually an enormously clever animal with a large,
complex brain.

For a wonder, I was actually aware of that.

Even flatworms have something called a brain and are
capable of learning. So the posters I think best fit your
description would probably fall into the Cnidarian category -- no
brain or no central nervous system whatsoever. Maybe even the
Porifera -- no nervous system at all.

The latter seems particularly appropriate given their
tendency to absorb illogical and/or refuted ideas. But even
restricting the choice to multicellular species you've left
out the entire plant and fungus kingdoms.

Neurophysiologists tend to ignore them for some funny reason!

.

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