Press (re)play to remember: How the brain strengthens memories during sleep

While we sleep, the brain produces particular activation patterns. When two of these patterns—slow oscillations and sleep spindles—gear into each other, previous experiences are reactivated. The stronger the reactivation, the clearer will be our recall of past events, a new study reveals.

Watch 1000 Musicians Play the Foo Fighters’ “Learn to Fly,” Nirvana’s “Smells Like Teen Spirit,” Queen’s “We Will Rock You,” and David Bowie’s “Rebel Rebel”

In the 1980s, avant-garde composer, guitarist Glenn Branca began writing symphonies for electric guitars — dozens of them, all playing at once, creating unprecedented psychoacoustic effects — sometimes beautiful harmony, sometimes unsettling dissonance — that reduced Branca himself to tears. “I remember one rehearsal where I actually had to stop and cry,” he once said. …