Sleep. Parents crave it, but children and especially teenagers, need it. When educators and policymakers debate the relationship between sleep schedules and school performance and — given the constraints of buses, sports and everything else that seem so much more important — what they should do about it, they miss an intimate biological fact: Sleep is learning, of a very specific kind. Scientists now argue that a primary purpose of sleep is learning consolidation, separating the signal from the noise and flagging what is most valuable.
School schedules change slowly, if at all, and the burden of helping teenagers get the sleep they need is squarely on parents. Can we help our children learn to exploit sleep as a learning tool (while getting enough of it)?
Absolutely. There is research suggesting that different kinds of sleep can aid different kinds of learning, and by teaching “sleep study skills,” we can let our teenagers enjoy the sense that they’re gaming the system.
Lawrence Hrubes on 16 Jan 14"But brain death is not quite as certain as these bioethicists might like. A doctor can't always determine whether the brain is truly dead. The diagnosis is made the old-fashioned way: by careful observation. A doctor checks to see whether the eyes are responsive to light or touch; she pricks the nailbeds to discern whether the pain registers; she tests muscle reflexes; she determines whether the buildup of carbon dioxide triggers spontaneous breathing if the ventilator is shut off; and she may use an electroencephalograph to detect electrical activity in the brain. (However, even a dead brain may produce some voltage.) If all the findings are negative, then the declaration is made. Even then, the doctor can be wrong. "
