[prole]

Excellent links. Here's a shortcut to Professor Mitra's publications on the topic since the BBC article is minimally informative about his research.

http://www.hole-in-the-wall.com/Publications.html

[pbhjpbhj]

I knew I'd heard about this on the radio, usually I listen to BBC Radio 4 so I think that this http://www.bbc.co.uk/radio4/factual/thinkingallowed/thinking... half-hour programme is where I heard of it. Just in case someone is looking for an audio presentation.