"The secret to a better memory may be as simple as listening to your own brain rhythms while you are snoozing. Previous research suggests when we sleep, we foster the creation of long-term memories. This process occurs when the brain waves create a slow, oscillating rhythm. A new study reveals that if a person listens to audio that coincides with that pattern, they are able to boost their memory skills. Researchers tested 11 healthy students who were asked to spend two nights at a sleep laboratory, where they had electrodes attached to their scalps to measure brain activity. Before they went to bed, the participants were asked to memorize 120 word pairs. On one of the two nights, participants slept while audio that was synced with their specific brain rhythm was played. The second night, audio that was out of sync was played in the background. The audio sounded like a pattern of quiet tones that lasted a fraction of a second. Only a few subjects noticed that there was strange audio while they were sleeping."
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