The Essential Benefits of a Full Night's Sleep Revealed

Canadian scientists from the Baycrest medical center have discovered that just one night of quality sleep can significantly improve memory of event sequences, and this effect persists for more than a year. The study was published in the scientific journal Nature Human Behaviour (NHB).

The team developed an unusual experiment in which participants took a 20-minute audio tour of an art exhibition, after which they were tested five times over a period from one hour to 15 months after the event.

In the second stage, volunteers were divided into a sleep group (night in the laboratory with EEG monitoring) and a wakefulness group. The results were confirmed: those who slept remembered the order of events better even after one year and three months.

"The benefits of sleep are enormous - just one night changes memory for a year ahead," the study authors clarified.

The discovery confirms that deep sleep strengthens connections between events in memory. It also explains why people with dementia lose the chronology of memories, even if they remember details.

This methodology could help in the rehabilitation of patients with cognitive disorders.