Big disclosure in research, sleep works to throw out negative emotions from inside you!


Sleep is very important in life. Doctors recommend sleeping six to seven hours every hour. It is necessary for a healthy life. But another big reason behind sleeping has been revealed in research. Researchers from the Department of Neurology at the University of Bern, Switzerland, identified that during sleep the brain works to strengthen the storage of positive emotions while reducing the reinforcement of negative emotions. This happens during the dream. 


This research is published in the journal Science. The work expands the importance of sleep in mental health and opens new avenues for therapeutic strategies. Rapid eye movement sleep is a unique and mysterious sleep state. During which the dreams are seen are associated with deep emotion. How and why the brain reactivates these feelings is not yet clear.

The goal of the research was to know the brain function happening in sleep.

The prefrontal cortex integrates many of these emotions during wakefulness but appears paradoxically silent during REM sleep. The goal of this research was to understand the underlying mechanisms and functions of such a surprising phenomenon. Processing emotions, especially distinguishing between danger and safety, is critical to the survival of animals, says Professor Antoine Adamantidis from the Department of Biomedical Research (DBMR) at the University of Bern and the Department of Neurology at the University Hospital, Inselspital, University Hospital. In humans, extreme negative emotions, such as fear responses and anxiety states, lead to pathological states such as post-traumatic stress disorder (PTSD). 


15 percent of the population in Europe affected by anxiety

About 15 percent of the population in Europe is affected by persistent anxiety and severe mental illness. The research group led by Antoine Adamantidis is now providing insight into how the brain helps strengthen positive emotions and weaken strongly negative or painful emotions during REM sleep. This study was published in the journal Science.

The researchers first conditioned the rats to recognize auditory stimuli associated with safety and others associated with danger (aversive stimuli). The activity of neurons in the rats' brains was then recorded during the sleep-wake cycle. In this way, the researchers were able to map different areas of the cell and determine how emotional memories change during REM sleep. 

Seven hours of sleep is very important for life

Seven hours of sleep is a good night. Sleeping more or less than this has little to do with cognition and mental health. Those who slept seven hours a day performed better on cognitive tests than those who slept less or more. Normal people also need seven hours of continuous sleep, without much variation in duration.