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"There's a big debate about what happens in our brain when we imagine visual items, like pictures, for example. Some people think our brains perceive visual images pictorially, using a part of the brain known for processing simple visual features.
Other people think our brains perceive visual stimuli symbolically, using the region of the brain known for processing words and language.
Joel Pearson and his team from Vanderbilt University have found strong evidence suggesting that our brains experience mental images as if they were pictures.
Pearson conducted this experiment and some related studies on more than 11 participants. In the end, the researchers discovered that if a person imagined one of the two patterns, that's the pattern he or she tended to see. "Hence mental imagery dictates what you will see later in time," says Pearson.
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