The selfie has arguably become the greatest photographic trend of our time. Why are we so interested in taking and sharing selfies and how does observing an image of yourself differ from observing a picture of someone else, asks University College, London neuroscientist James Kilner.
In everyday social situations we spend a lot of our time looking at and interpreting other people's faces and facial expressions. Indeed, reading and responding correctly to other people's facial expressions is essential for successful social interactions.
Through our lifetimes we become experts at recognising and interpreting other people's faces and facial expressions. In contrast, we have very little experience of looking at our own faces.