Sometimes in July 2012, I read this article from Scientific American Mind, May/June 2012 issue “Sleep’s secret repairs” by Jason Castro. I forgot if I have posted this piece.
“Slumber may loosen the links that undergird knowledge, restoring the brain daily to a vibrant, flexible state.”
“Emerging evidence suggests that sleep also serves as a reset button, loosening connections throughout the brain to put this organ back in a state in which learning can take place.”