The mysteries of 'lucid' dreaming

Posted on April 29, 2014

We all have experienced it at some point; being in a dream and conscious of it happening. Scientists are now investigating what happens in our brain when we have a lucid dream.

One of our most mysterious and intriguing states of consciousness is the dream. We lose consciousness when we enter the deep waters of sleep, only to regain it as we emerge into a series of uncanny private realities. These air pockets of inner experience have been difficult for psychologists to study scientifically and, as a result, researchers have mostly resorted to measuring brain activity as the sleeper lies passive. But interest has recently returned to a technique that allows real-time communication from within the dream world.

The rabbit hole between these worlds of consciousness turns out to be the lucid dream, where people become aware that they are dreaming and can influence what happens within their self-generated world. Studies suggest that the majority of people have had a lucid dream at some point in their life but that the experience is not common. As a result, there is now a minor industry in technologies and training techniques that claim to increase your chance of having a lucid dream although a recent scientific review estimated that the effect of any particular strategy is moderate at best. Some people, however, can reliably induce lucid dreams and it's these people who are allowing us to conduct experiments inside dreams.

Using a procedure first verified by sleep researcher Stephen LaBerge, the sleeper can signal to researchers when they have begun their lucid dream by using pre-arranged eye movements. The person moves their eyes in the agreed way in the dream, which occur as genuine eye movements, which are recorded and verified by electrodes that are placed around the eye sockets.

This simple but ingenious technique has allowed a series of experiments on the properties of the dream world and how they are reflected in brain function.

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Source material from The Guardian


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