Science: new discovery! How are our brain memories stored during sleep?

October 19, 2019 / Biovalley BIOON / - - recently, scientists from the interdisciplinary research center of biology, French Academy of France, have shown that the trigonometric waves generated by our brain during sleep do not become silent with the static of the cortical area, on the contrary, they will help the formation of long-term memory by isolating a special cluster of neurons The results were published in science on October 18, 2019 When we sleep, the hippocampus spontaneously activates itself by generating signals similar to when we are awake First it sends information to the cortex, which then responds The last is usually followed by a period of silence, so the brainwave is called "triangle wave" Then there's the rhythmic repetition of what's known as the "sleep spindle." These processes are the key to signal reorganization in cortex to form stable memory However, the role of trigonometry in the formation of new memory is still puzzling: why does silence interrupt the information exchange between hippocampus and cortex and the functional reorganization of cortex? (photo source: www.pixabay Com) in this regard, the author carefully observed the characteristics of triangular wave itself Surprisingly, they found that in the so-called "silent period", the cortex is not completely silent, but a few neurons keep active and form a collection This finding suggests that when all other neurons remain quiet, a small number of activated neurons can perform important functions while avoiding possible interference Furthermore, the authors reveal how spontaneous activation of hippocampus determines which cortical neurons remain active during the trigonometric wave, and reveal the process of information transmission between the two brain structures In addition, the authors suggest that the neurons activated during the duration of the triangle wave are the same as those involved in the task of learning spatial memory during the day In order to prove this, scientists induced artificial triangular waves in rat model to separate neurons related to hippocampal reactivation The results showed that after the correct neurons were isolated, the memory of rats was stable, and the spatial test was successfully completed the next day These results have greatly changed our understanding of the cortex Therefore, delta wave is a method of selective isolation of selected neurons These neurons send important information to form long-term memory in the signal communication between hippocampus and cortex (bio Com) information source: a new discovery: how our memories stabilize while we sleep original source: ralitsa Todorova, Micha ë L zugaro Isolated corporate calculations during delta waves support memory consolidation Science, 2019; 366 (6463): 377 doi: 10.1126/science.aay0616