There's also http://aeon.co/magazine/psychology/why-broken-sleep-is-a-golden-time-for-creativity/ http://aeon.co/magazine/psychology/why-broken-sleep-is-a-gol..

There's also http://aeon.co/magazine/psychology/why-broken-sleep-is-a-golden-time-for-creativity/ http://aeon.co/magazine/psychology/why-broken-sleep-is-a-gol... which was posted a while back on HN and which I found quite interesting.