WASHINGTON: A research team at Columbia’s Zuckerman Institute has observed in brain-imaging for the first time what happens in the human brain when we feel curiousity.
In their study, published in the Journal of Neuroscience, scientists discovered specific brain areas that evaluate uncertainty in visually confusing situations, which triggers feelings of curiosity.
“Curiosity has deep biological origins,” said Dr. Jacqueline Gottlieb, the principal investigator at the Zuckerman Institute. According to her, the main evolutionary purpose of curiosity is to encourage living beings to explore their surroundings, aiding in survival.
“What sets human curiosity apart is that it drives us to explore more broadly than other animals, often just to learn, without seeking a tangible reward,” said Dr. Gottlieb, who is also a professor of neuroscience at Columbia’s Vagelos College of Physicians and Surgeons. “This leads to much of our creativity.”
For their study, researchers used functional magnetic resonance imaging (fMRI), a noninvasive technique, to measure changes in blood-oxygen levels in the brains of 32 volunteers. This technology allowed them to see which parts of the brain were more active by observing oxygen consumption.
To identify the brain areas involved in curiosity, the team showed participants special images called texforms. These are pictures of objects like a walrus, frog, tank, or hat, distorted to make them harder to recognize.
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Participants were asked to rate their confidence and curiosity about each texform. The results showed an interesting pattern: the more confident people were about recognizing the texform, the less curious they were about it. Conversely, the less confident they were, the more curious they became.
This study provides new insights into the brain’s role in curiosity, highlighting how uncertainty and the desire to explore and learn are deeply interconnected.
