The reason behind pupil dilation during moments of surprise
Research from Brown University indicates that our pupils expand when a surprising event puts our brain on high alert. These sudden occurrences activate the locus coeruleus, which releases norepinephrine and diminishes previous expectations. The researchers explained that this reaction functions similarly to a "refresh" button. It enables individuals to rapidly interpret new circumstances, minimize bias, adapt to shifts, and improve their ability to predict future outcomes.
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