Breaking the Code: Why Yuor Barin Can Raed Tihs

By Natalie Wolchover

You might not realize it, but your brain is a code-cracking machine.

For emaxlpe, it deson’t mttaer in waht oredr the ltteers in a wrod aepapr, the olny iprmoatnt tihng is taht the frist and lsat ltteer are in the rghit pcale. The rset can be a toatl mses and you can sitll raed it wouthit pobelrm.

S1M1L4RLY, Y0UR M1ND 15 R34D1NG 7H15 4U70M471C4LLY W17H0U7 3V3N 7H1NK1NG 4B0U7 17.

Passages like these have been bouncing around the Internet for years. But how do we read them? And what do our incredibly low standards for what’s legible say about the way our brains work?

According to Marta Kutas, a cognitive neuroscientist and the director of the Center for Research in Language at the University of California, San Diego, the short answer is that no one knows why we’re so good at reading garbled nonsense. But they’ve got strong suspicions.

“My guess is that context is very, very, very important,” Kutas told Life’s Little Mysteries.

We use context to pre-activate the areas of our brains that correspond to what we expect next, she explained. For example, brain scans reveal that if we hear a sound that leads us to strongly suspect another sound is on the way, the brain acts as if we’re already hearing the second sound. Similarly, if we see a certain collection of letters or words, our brains jump to conclusions about what comes next. “We use context to help us perceive,” Kutas said.

It’s not a perfect system, however. In the above passages, Kutas suspects that you probably didn’t get every single word right just from knowing what came before it. You only thought you were reading the passage perfectly, because you automatically (and subconsciously) went back and filled in any gaps in your knowledge based on subsequent context — the words that came later.

Additionally, in the case of the first example (the words with jumbled middle letters), it helps that your brain processes all the letters of a word at once, rather than one at a time. Thus, the letters “serve as contexts for each other,” Kutas said.

In the case of the second passage (with the numbers in place of some letters), a 2007 study by cognitive scientists in Spain found that reading such passages barely activates the brain areas that correspond to digits. This suggests that the letter-like appearance of the digits, as well as their context, has a stronger influence on our brains than their actual status as digits. The researchers think some sort of top-down feedback mechanism (our consciences telling our sensory processors what to do, sort of) normalizes the visual input, allowing us to ignore the funny bits and read the passage with ease.

Follow Natalie Wolchover on Twitter @nattyover. Follow Life’s Little Mysteries on Twitter @llmysteries, then join us on Facebook.


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  • Thanks 🙂 I also understand it has more to do with the SHAPE of letters and words and what we anticipate/match-up in our vast ‘catalogue of previous examples’, rather than the simple meaning/interpretation of each letter/word and predicting based on the context

  • Chris Higginson

    It would be interesting to see if this ability to “read” like this applies to languages other than English.

    For example, English can be fearfully distorted in speech and yet be understandable, whereas some other languages such as French, when they are mispronounced, are unintelligible. (Not that easy when they are pronounced correctly either!)

    • Dani Baker

      Good question,I always thought ,Russian Chinese, Japanese,would be diffacult to learn.For that reason.

    • Thaht Guhy

      I believe not so much. Really not surprise, though.. English is the language of the mother of Babylon

  • KUTAS

    HAhahah… I ROTFL when i saw this “Marta Kutas”… WTF, she has POLISH name Marta, and in our language KUTAS means literally COCK.. There are no other meanings.. KUTAS=PENIS. Someone had a sense of humor when they invented the last name 😀

    • Nemo kapitány

      “Kutas” is a Hungarian word meaning ‘welly’ or ‘pumpy’, or ‘having a well or pump’, as the noun “kút” means ‘well’ or ‘pump’. Marta Kutas is not Polish but Hungarian. So forget phantasying about cocks, please…

  • Justin

    I think I may have a form of dyslexia? Just as you described you don’t notice when you misspell or put letters out of order. I do this as well. I am not officially diagnosed with dyslexia but I would like to find out if I have it for sure or not. Is there any resources or tests that a person can take to find out if they have dyslexia?

  • lolwhattheheck

    Your level of maturity is most relevant! 😛

  • Darren Wray

    The reason why “Yuor Barin Can Raed Tihs” is that humans have been playing a “language game” for thousands of years and over that time our skills have steadily improved.