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Harmful Effects of White Noise Machines

by
author image Sophie Bloom, M.S., L.Ac.
Sophie Bloom has been a professional writer since 2000, writing for nonprofits including the American Foundation for the Blind and The Adult Literacy Media Alliance. She received her Bachelor of Arts degree in culture and media studies from Johns Hopkins University and her Master of Science in acupuncture from Tri-State College of Acupuncture in New York City.
Harmful Effects of White Noise Machines
White noise machines can block out unwanted noise. Photo Credit kid can't hear image by Daria Miroshnikova from Fotolia.com

White noise machines are electronic devices used in both personal and professional settings that repeatedly play sounds such as an ocean tide or patterns of noise to block out unwanted noise, promote relaxation and provide privacy. However, white noise machines can make some individuals who are using personal listening devices to use high and potentially dangerous volume levels, warns the Hearing Review. White noise machines also can cause other problems.

Delayed Brain Development

White noise might delay brain development, according to the April 2003 issue of the journal Science. In an article titled "Environmental Noise Retards Auditory Cortical Development," researchers Edward F. Chang and Michael M. Merzenich explored the effects of prolonged white noise on baby rats. They found that their auditory cortex, the section of the brain responsible for hearing and language acquisition, did not develop normally until the white noise was removed.

Overriding Tinnitus

According to the National Institutes of Health, white noise machines can mask tinnitus symptoms. Tinnitus is an internal noise in the ears, such as a ring or hum. Individuals using white noise machines might be unaware of their tinnitus condition. While many individuals experience brief tinnitus because of loud ambient noises, frequent or prolonged tinnitus can reflect a larger problem such as high blood pressure or anemia.

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Spatial Conflict

Early, prolonged exposure to white noise might impair the brain's ability to perceive the geographic location of the sound, according to a July 2009 article in Cerebral Cortex magazine, "Early Continuous White Noise Exposure Alters Auditory Spatial Sensitivity." Shanghai-based researchers reared infant rat pups using a background of continuous white noise. They found that neurons in the auditory cortex that are responsible for spatial sensitivity were impaired.

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