Glossary
The NORAH glossary provides brief and clear explanations of technical terms and abbreviations. Can’t find the term you were looking for? Then simply get in touch with us via the contact form.
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Wake-up reaction
When a sleeping person changes from a deep sleep into the lightest sleep phase, or wakes up completely, the sleep researchers of the German Aerospace Center (DLR) speak of a Wake-up reaction. Even in a quiet environment, sleepers will experience such a wake-up reaction around 20 to 30 times a night. Usually they cannot remember this in the morning.