Chomsky Was Right, NYU Researchers Find: We Do Have a “Grammar” in Our Head”(New York University),

A team of neuroscientists has found new support for MIT linguist Noam Chomsky’s decades-old theory that we possess an “internal grammar” that allows us to comprehend even nonsensical phrases.
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Their results showed that the subjects’ brains distinctly tracked three components of the phrases they heard, reflecting a hierarchy in our neural processing of linguistic structures: words, phrases, and then sentences—at the same time.