The study found that the brain mechanism of forgetting dreams

Do you have any experience that you can't remember after dreaming? In animal experiments, US and Japanese research teams found that a hormone in the brain that controls appetite may also be involved in memory regulation, making dreams easy to be forgotten, so as to prevent brain information overload According to the study published in the latest issue of science, 52.8% of mouse hypothalamic cells that can secrete "melanin aggregation hormone" are activated in "rapid eye movement sleep", which is a molecule involved in the regulation of appetite Studies have shown that only 35% of the hypothalamic cells are activated when the mice are awake The researchers used gene tools to activate or shut down the neurons secreting "melanin aggregation hormone" in the mouse brain They found that activating the neurons during REM sleep would make the memory of mice worse, otherwise the memory would be improved According to reports, during the rapid eye movement sleep stage, the animal's eyes will move rapidly, the body muscles will relax, and dream will be accompanied, but most dreams will be forgotten when waking up Thomas kildaff, co-author of the paper and director of the center for Neuroscience at Stanford Research Institute, said the results showed that whether a certain type of neuron is activated controls whether the brain can remember the information in dreams It is found that these hypothalamic cells play a role in learning and memory They send inhibitory signals to the hippocampus through long axons, which is the memory center of the brain The researchers say finding a mechanism for forgetting in sleep could improve understanding of memory related disorders such as post-traumatic stress disorder and Alzheimer's disease.