Pascal Wallisch

"My baby has a hard time going to sleep and keeps waking up throughout the night."

"I'm so tired that I can't even begin to look into what is going on."

These sentiments are quite common among new parents.

The science of sleep I: How the brain regulates sleep and wake cycles

Regulation of the sleep/wake cycle

The rotation of the earth orbiting the sun – a single star – creates regular day and night cycles.

Most organisms take advance of this situation by adapting their lifestyle to being active during 

one of these phases – nocturnal animals at night, diurnal animals during the day. Matching 

one’s sensory apparatus and behavior to the conditions in the environment provides a distinct 

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