Sleep is necessary not only for our body, but also for our memory: it is during these hours that information is “rewritten” from short-term memory to long-term memory.
Sleep is necessary not only for our body, but also for our memory: it is during these hours that information is “rewritten” from short-term memory to long-term memory. Psychologists and biologists at Stanford University (USA) clarify: for correct memorization, it is not the total time of sleep that is more important, but its continuity *. They calculated: if the duration of each cycle is reduced by more than 30-40% of the norm **, memory impairment occurs.
* For more information, see the Proceedings of the National Academy of Sciences, pnas.org
** One sleep cycle lasts 90-100 minutes on average; ideally, there should be five such cycles per night.