[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Reptilian brain (free pdf)

I make a point of  only using my reptilian brain.

On 4/23/2015 9:01 AM, Ben Creisler wrote:
Ben Creisler

A recent paper that may be of interest, in open access:

Robert K. Naumann, Janie M. Ondracek, Samuel Reiter, Mark
Shein-Idelson, Maria Antonietta Tosches, Tracy M. Yamawaki & Gilles
Laurent (2015)
The reptilian brain.
Currrent Biology 25(8): R317–R321

Carl Sagan’s amusing words of wisdom notwithstanding — is the H-bomb
not also a product of the cerebral cortex? — is the reptilian brain
really just a mammalian brain missing most of the parts? Some 320
million years ago, the evolution of a protective membrane surrounding
the embryo, the amnion, enabled vertebrates to develop outside of
water and thus to invade new terrestrial niches. These amniotes were
the ancestors of today’s mammals and sauropsids (reptiles and birds).
Present-day reptiles are a diverse group of more than 10,000 species
that comprise sphenodons (‘Tuatara’), lizards, snakes, turtles and
crocodilians. Although turtles were once thought to be the most
‘primitive’ among reptiles, current genomic data point toward two
major groupings: the Squamata (lizards and snakes); and a group
comprising both the turtles and the Archosauria (dinosaurs, modern
birds and crocodilians) (Figure 1). Dinosaurs inhabited the Earth from
the Triassic (230 million years ago), at a time when the entire
landmass formed a single Pangaea. They flourished from the beginning
of the Jurassic to the mass extinction at the end of the Cretaceous
(65 million years ago), and birds are their only survivors...