How Brains See Music as Language

A new Johns Hopkins study looks at the neuroscience of jazz and the power of improvisation.
A member of the Preservation Hall Jazz Band performs at the New Orleans Jazz and Heritage Festival in New Orleans. (Gerald Herbert/AP)

For the better part of the past decade, Mark Kirby has been pouring drinks and booking gigs at the 55 Bar in New York City's Greenwich Village.

The cozy dive bar is a neighborhood staple for live jazz that opened on the eve of Prohibition in 1919. It was the year Congress agreed to give American women the right to vote, and jazz was still in its infancy. Nearly a century later, the den-like bar is an anchor to the past in a city that's always changing.

For Kirby, every night of work offers the chance to hear some of the liveliest jazz improvisation in Manhattan, an experience that's a bit like overhearing a great conversation. "There is overlapping, letting the other person say their piece, then you respond," Kirby told me. "Threads are picked up then dropped. There can be an overall mood and going off on tangents."

The idea that jazz can be a kind of conversation has long been an area of interest for Charles Limb, an otolaryngological surgeon at Johns Hopkins. So Limb, a musician himself, decided to map what was happening in the brains of musicians as they played.

He and a team of researchers conducted a study that involved putting a musician in a functional MRI machine with a keyboard, and having him play a memorized piece of music and then a made-up piece of music as part of an improvisation with another musician in a control room.

What researchers found: The brains of jazz musicians who are engaged with other musicians in spontaneous improvisation show robust activation in the same brain areas traditionally associated with spoken language and syntax. In other words, improvisational jazz conversations "take root in the brain as a language," Limb said.

"It makes perfect sense," said Ken Schaphorst, chair of the Jazz Studies Department at the New England Conservatory in Boston. "I improvise with words all the time—like I am right now—and jazz improvisation is really identical in terms of the way it feels. Though it's difficult to get to the point where you're comfortable enough with music as a language where you can speak freely."

Along with the limitations of musical ability, there's another key difference between jazz conversation and spoken conversation that emerged in Limb’s experiment. During a spoken conversation, the brain is busy processing the structure and syntax of language, as well the semantics or meaning of the words. But Limb and his colleagues found that brain areas linked to meaning shut down during improvisational jazz interactions. In other words, this kind of music is syntactic but it's not semantic.

"Music communication, we know it means something to the listener, but that meaning can't really be described," Limb said. "It doesn't have propositional elements or specificity of meaning in the same way a word does. So a famous bit of music—Beethoven's dun dun dun duuuun—we might hear that and think it means something but nobody could agree what it means."

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Adrienne LaFrance is a senior associate editor at The Atlantic, where she oversees the Technology Channel. Previously she worked as an investigative reporter for Honolulu Civil Beat, Nieman Journalism Lab, and WBUR. More

Her writing has appeared in The New York Times, The Washington Post, Gawker, The Awl, and several other publications.

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