The private life of the brain, with Wammo on Kiwi

Talking New Scientist stories with Wammo on Kiwi FM, 1 November 2008:
The brain is doing very important things when stuck in neutral. Researchers have noticed that instead of lying dormant when unoccupied, the brain devours a huge amount of calories when we’re doing absolutely nothing. So what exactly is it up to? Some say there’s a major system within the brain that taps in to our memories, knitting them all together. Others believe all the evidence points to a default network that enables us to daydream.
And...
Spoken phrases seem to morph into song when repeated, shedding light on the difference between speech and song. In a US test, people who were played a phrase once and asked to repeat what they heard, spoke it back. But those who heard the same phrase many times sang it back.
Listen here.