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In one experiment, researchers at University College London measured brain activity in the visual cortex, which analyses information sent by the eyes. By viewing the brain activity of study volunteers, the scientists were able to predict subliminal images flashed on a computer screen better than the volunteers who viewed the images themselves, BBC News Online reported.

A separate study by Japanese researchers found that when people were shown stripes tilted in different directions, there were subtle differences in the pattern of brain activity reflected by the MRI.

The scientists created a computer programme to analyse these different brain patterns and found it could predict the direction of the stripes that had been shown to volunteers with "remarkable accuracy," the BBC report said.
 

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