BBC NEWS | Health | Scientists find 'pleasure nerves'

BBC NEWS | Health | Scientists find 'pleasure nerves': "Scientists say they understand more about how the body responds to pleasurable touch.

A team, including scientists from the Unilever company, have identified a class of nerve fibres in the skin which specifically send pleasure messages.

And people had to be stroked at a certain speed - 4-5cm per second - to activate the pleasure sensation."