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Normal Sleep, Sleep Physiology, and Sleep Deprivation: eMedicine Neurology

Normal Sleep in Adults, Infants, and the Elderly Normal sleep is divided into non–rapid eye movement (NREM) and rapid eye movement (REM) sleep. NREM sleep is further divided into progressively deeper stages of sleep: stage N1, stage N2, and stage N3 (deep or delta-wave sleep). As NREM stages progress, stronger stimuli are required to result [...]



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  • Clara Edwards: Our daughter had been an erratic sleeper (much of it our fault, in retrospect) and frequently ended up...
  • Emilio Gonzalez: Ferber does a good job of describing what happens when you sleep. Apparently everyone wakes up in...
  • Roberta Reid: I guess my main problem with Ferber was the way that it’s an exact, rigid theory or philosophy....
  • Amber Laws: We were careful to put him in bed before he was completely asleep so he could adjust to the idea of being...
  • Debbie Hubbard: Good luck.posted by dragonsi55 at 7:07 AM on September 29, 2006
  • Douglas Witherell: This idea that you can have a child sleeping quietly in three days is more to appease the parents,...
  • Robert Spangler: The “Cry it out” method didn’t work on him — what did work was something...
  • William Aguilar: The thing is, children are not interchangable. For varying reasons, some kids sleep well righr away...
  • Robin Kelly: We got a baby massage book and started “bedtime” about 30 minutes before we put him down for...
  • Jessica Miller: That being said, rdurbin already wrote down everything I wanted to say–especially the part...
  • Justin Schultz: An idea? To appease us? We spent many months with various techniques that didn’t work, Ferber...
  • Linda Allmon: The second one was a preemie (about 7 weeks) and it literally took years for him to settle into a good...
  • Tara Mccandless: But they do, frequently, until their child is asleep. Have you read any other part of it than the...
  • Darrell Jones: I agree with the being present and patting on the back and telling him it is night night time while...
  • Todd Mcclelland: I think even if you don’t use his process, he’s got a lot of interesting things to say...