Study: Dreams help the brain forget useless memoriesSeptember 20, 2019 - 17:00 AMT PanARMENIAN.Net - Brain cells work to actively forget memories during a specific phase of sleep. That's according to scientists, who hope their research could help to deepen people's understanding of Alzheimer's disease. When you sleep, your brains clear out the memories you've made while you're awake, deciding what to keep and what to discard. Forgetting is an active process, explained the authors of the study published in the journal Science. But less is known about this process during the different phases of sleep, newsweek says. The team found that during the rapid eye movement (REM) sleep phase—or active sleep when you are thought to dream—special nerve cells appear to actively contribute to forgetting. What are known as melanin-concentrating hormone-producing (MCH) neurons sit in the hypothalamus: a part of the brain which helps with a range of functions such as sleep, appetite, and emotions. Past research has suggested these cells help to control REM sleep patterns: activating the MCH neurons increasing time spent in this phase, while inhibiting them reducing transitions into this phase. The team looked at MCH cells in mice, and found 52.8 percent were active during REM sleep, compared with 35 percent when the mice were awake. They also turned MCH neurons on and off during memory tests. MCH cells appeared to send messages to the hippocampus to stop the formation of memories. Top stories Authorities said a total of 192 Azerbaijani troops were killed and 511 were wounded during Azerbaijan’s offensive. In 2023, the Azerbaijani government will increase the country’s defense budget by more than 1.1 billion manats ($650 million). The bill, published on Monday, is designed to "eliminate the shortcomings of an unreasonably broad interpretation of the key concept of "compatriot". The earthquake caused a temporary blackout, damaged many buildings and closed a number of rural roads. Partner news | Biden honors resilience of Armenian people on April 24 U.S. President Joe Biden has issued a statement on the 109th anniversary of the Armenian Genocide. Ex-Karabakh leader moved to solitary confinement cell in Baku, his son says David Vardanyan is the son of former Karabakh leader Ruben Vardanyan who who is currently imprisoned in Azerbaijan. Macron says France commemorates 109th anniv. of Armenian genocide Today France commemorates the 109th anniversary of the Armenian genocide of 1915, Macron says. Freedom House concerned by mounting reports of police violence in Armenia Freedom House urged Armenian authorities to investigate this pattern of excessive force and inhumane treatment. |