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"Magicians are manipulating your consciousness. They are showing you something impossible," says Wiseman. "They're getting you to construct a narrative, which simply isn't true. So that means they know how to make you aware of certain things and blind to other things. What I'm hoping is that magic, this entertainment vehicle that has been around for a long time, will give us a real insight into the deep mysteries of consciousness."
Our brains filter out a huge amount of the mass of sensory input flooding in from our environment. Kuhn explains that we see what we expect to see and what our brains are interested in. "Our visual representation of the world is much more impoverished than we would assume. People can be looking at something without being aware of it. Perception doesn't just involve looking at an object but attending to it."
In Kuhn's recent work, he performed a trick where a cigarette seems to disappear. It involved no sleight of hand or secret. It was a simple case of dropping the cigarette into his lap. "It happens right in front of the spectator's eyes but I misdirect their attention away from the cigarette," says Kuhn.
While his spectators watched, they wore eye trackers (essentially a couple of cameras that monitor eye movement and provide an exact location of where a person is looking in a scene).
It is known that we only receive high-quality information from the area we are fixated on, right in the centre of our field of view. If you stretch out your arm, it is about two thumbs' width at the centre of your vision - everything else is pretty much blurred. The way we compensate for this is to move our eyes around to fill in the gaps and create a better picture of the world around us.
Kuhn's results, to be published in the journal Perception in the next few months, showed that simply staring at the location of the deception was not enough for people to discover how the trick happened.