Re: [CF] 'Reptilian' brain chooses vehicles
--- In CarFree@yahoogroups.com, JamesJFitz@J... wrote:
> Hmm, where did all of the other articles on the 'reptilian brain'
> that I've recently read go to? All I can find is this:
> Maybe the 'reptilian brains' are responsible.
> Jim (a J from MA)
As I read that article, I was thinking of Carl Sagan's book (first
published in 1977), THE DRAGONS OF EDEN wherein he described the
human triune brain.
Here's a description of how the truine brain is composed according
"The Brain and the Chariot," concerns the anatomical evolution of
the human brain. Carl Sagan conceptualizes the human brain as three
main evolutionary components: the R-complex, the limbic system, and
the neocortex. The R-complex is considered the most basic and primal
part of the brain, having evolved hundreds of millions of years ago.
In fact, humans share the R-complex region with all other mammals
and reptiles. It plays an important role in aggressive behavior,
territoriality, ritual, and social hierarchies. Physiologically, it
is involved in some of the most basic brain-regulated functions,
such as breathing and control of heart rate. The limbic system,
which encapsulates the R-complex, evolved around 150 million years
ago, and is fully developed only in mammals. The limbic system is
responsible for the strong and vivid emotions that are most often
associated with humans, but are also characteristic of other
primates and mammals. The newest region of the brain, having evolved
only 10 million years ago, is the neocortex. The neocortex is only
found in the "higher" mammals, including primates and humans. All
advanced brain functions, including language, anticipation, vision,
and fine motor skills, are processed and controlled by the