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A single dose psychological intervention, which includes using the computer game Tetris, can prevent the unpleasant, intrusive memories that develop in some people after suffering a traumatic event.

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Researchers have been able to demonstrate how the survivors of motor vehicle accidents have fewer such symptoms if they play Tetris in hospital within six hours of admission after also having been asked to recall their memory of the accident. The results of the study, which was conducted by researchers at Karolinska Institutet with colleagues at Oxford University and elsewhere, are published in the journal Molecular Psychiatry.

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