Catherine Shalini Raja – Happy To Serve
Catherine Shalini Raja – Happy To Serve
Another mystery about sleep is that no two persons need the same amount of sleep. Dr. Nathaniel Kleitman, Associate Professor of Physiology at the University of Chicago, who conducted years of extensive experiments at the University’s “Sleeping Laboratory” says that there is no more a normal duration of sleep than there is normal height and weight. Continue reading “SLEEP!!!!!! Restorative of Tired Body and Mind.. PART 3”
Theories of sleep
Many theories of sleep have been advanced to explain the temporary loss of consciousness which we know as sleep. The oldest theory is that sleep is induced by a reduction in the blood supply to the brain or at least to conscious centres. This is known as ischemic theory. Even the ancient Greek physicians were aware that the carotid artery was in a way concerned with the onset of sleep. The name itself expresses this belief. The Greek word ‘ Karotides’ for carotid arteries is derived from karoo which means ‘put to sleep.’ In modern times, the drowsiness after a meal, presumably due to the diversion of blood from the brain to the digestive organs, is cited in support of the ischemic theory. Continue reading “SLEEP!!!!!! Restorative of Tired Body and Mind… Part 2”