'It's like collective daydreaming': the giant study showing how dancing affects our brains; Dancers and audiences are being fitted with electrode caps as part of a massive neurological study into how we respond to live performance -- and the findings go far beyond what was first imagined

Byline: Lyndsey Winship The gel felt cold on my scalp and I had to forget how silly I must have looked, because we were in the midst of some serious [...]