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Shape-shifting video lets you hallucinate without touching drugs

DO NOT watch if you suffer from epilepsy or are sensitive to flashing lights

Focus your eyes on the centre of the illusion for around just under two minutes before gently looking away into the distance when you are instructed.

Look away and watch the world deform. Effect can last for up to 20 secs

Illusion created when brain cells detecting motion become tired

After the eyes look away, the cells that detect motion in the other direction are more active and a stationary object appears to be moving

f you are interested in experiencing a mind-bending trip but don't want to take drugs, this new optical illusion could be for you.

Simply focusing on the letters in this video and looking away after a minute or so can transform the environment around you, making objects bend and three-dimensional patterns warp your perception of reality.

The psychedelic trick, known as 'motion aftereffects', makes viewers see movement in objects that are in fact stationary.

An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source. There are three main types: literal optical illusions that create images that are different from the objects that make them, physiological ones that are the effects on the eyes and brain of excessive stimulation of a specific type (brightness, colour, size, position, tilt, movement), and cognitive illusions, the result of unconscious inferences.