Neuroscientists at the University of Alberta have discovered a mechanism that might create memories during sound sleep. This study focuses on nucleus reuniens, an area that connects with two other brain structures i.e prefrontal cortex and the hippocampus that helps in creating memories and coordinate their activity during slow-wave sleep. Slow-wave sleep is the most profound stage of sleep, during which the brain vibrates at a very slow pace. Slow-wave sleep is vital for muscle and brain recovery and has been shown to play an important role in memory concentration.