Breathing is spuratic. 8-9 hours Drowsiness Falling asleep or waking up. Varies Quiet Alertness Eyes open and attentive, though infant's body is relatively inactive. Breathing is even. 2-3 hours Waking Activity and Crying Frequent bursts of uncoordinated body activity.
Breathing is very irregular.
Face may be relaxed or tense and wrinkled. Crying may occur. 1-4 hours Similarly to the States of Arousal, there are 2 States of sleep. During REM sleep, the brain and other parts of the body are highly active. Brain wave activity is similar to that of being awake.