How your brain is like a film editor

Author: Laura Sanders / Source: Science News for Students

Our lives are continuous experiences.

But like the scenes of a movie, we tend to remember particular moments or scenes plucked from those experiences. Maybe you remember what your third-grade classroom looked like. Or kicking a goal in a soccer game. Or some particular meal that you ate at a friend’s house. New research suggests these memories may have been saved thanks to a part of the brain called the hippocampus.

The hippocampus may slice up our life’s moments in ways that can be stored away as memories. Think of it as the film editor of our lives.

Gabriel Radvansky studies the psychology of memory at the University of Notre Dame in Indiana. He wasn’t part of the new research. But it offers a new way to study how people form memories, he says. “Research like this helps us identify, ‘What is an event?’ from the point of view of the brain.”

Many lab tests of memory check how well people can recall dull lists of information. “So much research is done with these little bits and pieces — words, pictures, things like that,” Radvansky says. But those dry tidbits aren’t what the human brain usually handles. “The mind is built to deal with complex events.”

For the new study, researchers turned to something more like real life: movies.

Aya Ben-Yakov and Rik Henson work at the University of Cambridge in England. As cognitive neuroscientists, they study the brain’s role in thinking, memory and other mental processes. They wondered how people remember certain moments from their lives. So they researched what happens in the brain as people watched feature length videos.

Sixteen viewers were asked to note when one scene ended and another began. And those transition spots occurred at the same time that one part of the brain became especially active in more than 260 other viewers of these same movies. That response “was actually quite striking,” Ben-Yakov notes. “I wasn’t expecting it to be this strong and this clear.”

The brain goes to the movies

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