Eye movements are an indicator when your mind wanders while reading, a new study has revealed.

In the study, when students were asked to read Jane Austen's 'Sense and Sensibility' on a screen, they were also asked to push a button marked "Z" when they noticed themselves "zoning out."
A computer tracked their eye movements and also asked every few minutes if they'd just been paying attention or zoning out.
In normal reading, the eye fixates on a word, and then zips to another word. It spends a longer time on words that are less common, but when someone's mind was wandering, the eyes did not follow these patterns. They also fixated for longer on individual words.
"It was almost like they were just mechanically plodding along," Reichle said.
The study suggested that when people are reading, eye movements are strongly linked to the language-processing going on in the brain.
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Source-ANI