By Clare Wilson Memories form in the hippocampus, and we can see the resulting brain waves reflected in people’s behaviour SEBASTIAN KAULITZKI/SCIENCE PHOTO LIBRARY/Getty ImagesHow do we make a memory? An idea gaining ground is that forming memories and recalling them involves brainwaves cycling several times a second in our hippocampi, two small curved structures…


                        <figure class="article-image-inline" data-method="caption-shortcode"><img src="https://images.newscientist.com/wp-content/uploads/2015/08/ns-logo-for-featured-image.jpg?width=800" data-src="https://images.newscientist.com/wp-content/uploads/2020/05/26235040/gettyimages-1220616079_web.jpg?width=300" data- class="image lazyload" alt="New Scientist Default Image"><div class="image-details"><figcaption class="font-sans-serif-xxxs--bold">Memories form in the hippocampus, and we can see the resulting brain waves reflected in people&rsquo;s behaviour</figcaption><p class="credit font-sans-serif-xxxs--regular">SEBASTIAN KAULITZKI/SCIENCE PHOTO LIBRARY/Getty Images</p></div></figure>How do we make a memory? An idea gaining ground is that forming memories and recalling them involves brainwaves cycling several times a second in our hippocampi, two small curved structures on either side of the brain.

Evidence to support the idea is accumulating, including the first glimpses of subtle patterns in people’s actions that reflect these underlying rhythms. “You can make these brainwaves visible in behaviour,” says Maria Wimber at the University of Birmingham, UK.

The …

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