Researchers from the University of California, Los Angles, have found that, even during sleep, the brain behaves as if it is remembering something.
In a study published in the journal Nature Neuroscience, researchers measured the activity of neurons from multiple parts of the brain involved in memory formation.
“The big surprise here is that this kind of persistent activity is happening during sleep, pretty much all the time.” Mehta said. “These results are entirely novel and surprising. In fact, this working memory-like persistent activity occurred in the entorhinal cortex even under anesthesia.”