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Allison Sheridan couldn’t care less about music. Songs of love and heartbreak don’t bring her to tears, complex classical compositions don’t amaze her, peppy beats don’t make her want to dance. For Sheridan, a retired engineer, now a podcaster, who owns 12 vinyl records and hasn’t programed the radio stations in her car, “music sits in an odd spot halfway between boring and distracting.”

Despite coming from a tremendously musical family, Sheridan is part of the roughly 3 to 5 percent of the world’s population that has an apathy toward music. It’s what’s referred to as specific musical anhedonia — different from general anhedonia, which is the inability to feel any kind of pleasure and which is often associated with depression. In fact, there’s nothing inherently wrong with musical anhedonics; their indifference to music isn’t a source of depression or suffering of any kind, although Sheridan notes, “The only suffering is being mocked by other people, because they don’t understand it. Everybody loves music, right?”

Previous research shows that the vast majority of people who enjoy music show an increase in heart rate or skin conductance—where a person’s skin temporarily becomes a conductor of electricity in response to something they find stimulating. Musical anhedonics, however, show no such physiological change to music. A recent study, published in the Proceedings of the National Academy of Sciences, took those findings a step further by studying neural responses to music.

As part of the study, 45 students from the University of Barcelona (where most of the study authors are based) were asked to fill out a questionnaire that helped determine their sensitivity to musical reward. Based on their responses, they were divided into groups of three—people who don’t care for music at all, those who have some interest in music, and those who essentially live and breathe music. The researchers then had them listen to music while measuring their brain activity with an fMRI machine.

For people who enjoy music, activity in the brain’s auditory and reward regions is closely coupled and, for them, hearing a song resulted in joy and pleasure. But, in the brains of people with specific musical anhedonia, researchers found that the auditory and reward regions of the brain simply didn’t interact in response to music. As a control, to make sure that musical anhedonics responded to other stimuli, researchers also had participants play a gambling game and found that winning money activated the brain’s reward system just fine.

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By Divya Abhat

Divya Abhat is a freelance writer based in the Washington, D.C. area. Her work has appeared in Smithsonian Magazine, on NPR, and at SciDev.net.

https://www.theatlantic.com/health/archive/2017/03/please-dont-stop-the-music-or-do-stop-the-music-i-dont-really-mind/519099/
[Thank you to Alex Teitz, http://www.femmusic.com, for contributing this article.]

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