User talk:Felicipnzln
Hi, I'm about to undo your edit and thought I should explain why. The figure of 10-to-1 was once the consensus, but more recent studies have generally agreed that a figure of 1-to-1 is more accurate -- our human brain article gives the relevant references. Unfortunately not all textbook authors have yet caught up with the newer information. Regards, Looie496 (talk) 01:47, 21 April 2012 (UTC)