ui22204 at sunmail.lrz-muenchen.de
Thu Mar 9 13:54:13 EST 1995
On 23 Feb 1995, ###THE NET### wrote:
1> In article <127hugh.1 at chiron.wits.ac.za>, 127hugh at chiron.wits.ac.za (Hugh
1> S. Selsick) wrote:
1> > I am interested in gathering ideas about the purpose of sleep.Can
1> > suggest why sleep may have evolved, or what physiological functions it
1> > serves? Does sleep serve the same purpose in all animals?
1> Evolutionary-wise, sleep may have evolved, among other things, to protect
1> the animal from being preyed on during those times of the day/night when
1> they were not adapted to survive. Much better to stay in one place and
1> live than to move around aimlessly and become someone else's lunch. Also,
1> it gives the organism to process it's last meal and build up energy.
Though the reasoning may appear straightforward, I do not agree. Sleep,
an ubiquitary phenomenon in more complex animals, seems to have
predominantly information-processing background (planning, evaluation
of daytime input, etc.) as well as regenerative functions.
1> Arctic Fox
More information about the Neur-sci