Working memory is one of the brain’s executive functions, a skill that allows humans to process information without losing track of what they’re doing.
In the short term, working memory allows the brain to complete an immediate task, like loading the dishwasher. Long term, it helps the brain decide what to store for future use, such as whether more dishwasher soap will be needed.
University of Texas at Arlington researchers know that working memory varies greatly among individuals, but they aren’t sure exactly why. To better understand, Matthew Robison, assistant professor of psychology, and doctoral student Lauren D. Garner conducted an experiment to see if studying a person’s pupils (the centers of their eyes) was a good indicator of working memory.
Normally, a person’s pupils naturally widen (or dilate) in low-light environments to allow more light into the eye. However, in their new study published in the peer-reviewed journal Attention, Perception & Psychophysics, the researchers reported that a person’s pupils also dilate when they are concentrating on tasks. In particular, they found that the more a person’s eyes dilated during the task, the better they did on tests measuring their working memory.
“What we found was that the lowest performers on the tasks showed less…
Source www.sciencedaily.com
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