Humans blink 15-20 times per minute. That's a staggering 1,200 times per hour. But how we keep our vision focused and clear instead of going dim was not certain until now.
Scientists from different countries including Singapore worked together and discovered how our eye and our brain collaborate to keep our vision clear and precise in those erratic blinking.
Dr Gerrit Maus, an assistant professor of psychology at Nanyang Technological University and lead author of the study, said, "Our findings suggest that the brain gauges the difference in what we see before and after a blink, and commands the eye muscles to make the needed corrections."
The researchers say that our eye muscles are imprecise and slow that the brain makes adjustments in its motor signals ensuring that after eyeballs rollback in during a blink, it can position back and keep its focus after that splitting milliseconds of blinking.
"We perceive coherence and not transient blindness because the brain connects the dots for us," said study co-author David Whitney, a psychology professor at UC Berkeley.
"Our brains do a lot of prediction to compensate for how we move around in the world," said co-author Patrick Cavanagh, a professor of psychological and brain sciences at Dartmouth College.
Dr. Maus concluded, "These findings add to our understanding of how the brain constantly adapts to changes, commanding our muscles to correct for errors in our bodies’ own hardware."
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