Professor Bruce Hood shows an illusion which involves a sculpted face, but instead of the usual convex human face of a sculpture, the sculpture is flipped and we're shown the inside of the face but human brains find it hard to recognise it is convex until the head starts turning around. <br /><br />This clip is part of the Christmas Lectures 2011 presented by Professor Bruce Hood - Lecture Three: Are you thinking what I'm thinking?<br /><br />View the full Lectures on the Ri Channel: <br />www.richannel.org/christmas-lectures/2011/meet-your-brain
