I often wonder, as I watch my calmly sleeping baby randomly grin while she sleeps. What is she smiling about anyway? A bottle full of her delicious formula? A leisurely nap in the stroller in the afternoon breeze? Or is she perhaps having a terrible nightmare about her older brother sitting on her? Turns out it's probably none of the above.
Herein a little infant sleep primer. People go through five stages when they sleep. Four of these stages belong to non-REM sleep, and one stage is REM sleep - called such because of its characteristic rapid eye movements. As adults, we spend about one quarter of our sleep time in REM sleep - the time when our eyes jerk and bodies twitch. This is also the stage of sleep in which we dream. Infants actually spend much more time in REM sleep - about 50 to 80 percent of their sleep time is spent in this phase. Many people presume that infants do indeed dream during this stage, just as adults do, butRead More »from Do Babies Dream?