Featured Research

from universities, journals, and other organizations

Portable media players associated with short-term hearing effects

Date:
June 22, 2010
Source:
JAMA and Archives Journals
Summary:
Temporary changes in hearing sensitivity are associated with potential harmful effects of listening to an MP3 player, according to a new study.

Temporary changes in hearing sensitivity are associated with potential harmful effects of listening to an MP3 player, according to a report in the June issue of Archives of Otolaryngology-Head & Neck Surgery, one of the JAMA/Archives journals.

"It is well known that excessive occupational noise exposure can lead to noise-induced hearing loss," the authors write as background in the study. The increasing popularity and availability of portable music players has caused concern about the potential hazardous effects on hearing. "Excessive noise exposure can lead to metabolic and/or mechanical effects resulting in alterations of the structural elements of the organ of Corti [the inner ear organ in mammals that contains auditory sensory cells or 'hair cells']. The primary damage is concentrated on the outer hair cells, which are more vulnerable to acoustic overstimulation that inner hair cells."

Hannah Kempler, M.S., of Ghent University, Belgium, and colleagues studied 21 participants who were exposed to pop-rock music in six different sessions using two types of headphones at multiple preset settings of the MP3 player. The study included a noise exposure group consisting of ten men and 11 women (age 19 to 28) who listened to pop-rock music for one hour. A second control group consisted of 14 men and 14 women, also age 19 to 28 years.

All participants in the noise exposure group listened to an MP3 player for a maximum of six sessions at varying volume levels, using two separate types of headphones. These tests were designed to study the short-term effects on the auditory system of young adults listening to an MP3 player for one hour. Hearing in both groups was evaluated before and after one hour, using two measurements; one that studied sounds emitted in response to an acoustic stimuli of very short duration and one that studied sounds emitted in response to two simultaneous tones of different frequencies.

Researchers found significant changes between pre-exposure and post-exposure measurements using one set of criteria, but did not find much difference when using the second set. The authors also noted that "significant threshold or emission shifts were observed between almost every session of the noise exposure group compared with the control group."

The authors conclude that, "the development of a permanent threshold shift cannot be predicted from the initial temporary threshold shift, but considering the reduction in hearing sensitivity after listening to a portable media player, these devices are potentially harmful. Further research is needed to evaluate the long-term risk of cumulative recreational noise exposures."


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hannah Keppler; Ingeborg Dhooge; Leen Maes; Wendy D'haenens; Annelies Bockstael; Birgit Philips; Freya Swinnen; Bart Vinck. Short-term Auditory Effects of Listening to an MP3 Player. Arch Otolaryngol Head Neck Surg, 2010; 136 (6): 538-548 [link]

Cite This Page:

JAMA and Archives Journals. "Portable media players associated with short-term hearing effects." ScienceDaily. ScienceDaily, 22 June 2010. <www.sciencedaily.com/releases/2010/06/100621173731.htm>.
JAMA and Archives Journals. (2010, June 22). Portable media players associated with short-term hearing effects. ScienceDaily. Retrieved October 23, 2014 from www.sciencedaily.com/releases/2010/06/100621173731.htm
JAMA and Archives Journals. "Portable media players associated with short-term hearing effects." ScienceDaily. www.sciencedaily.com/releases/2010/06/100621173731.htm (accessed October 23, 2014).

Share This



More Health & Medicine News

Thursday, October 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Working Mother (Oct. 22, 2014) Is your child ready? Video provided by Working Mother
Powered by NewsLook.com
U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

Newsy (Oct. 22, 2014) Now that the U.S. is restricting travel from West Africa, some are dropping questions about a travel ban and instead asking about visa bans. Video provided by Newsy
Powered by NewsLook.com
US to Track Everyone Coming from Ebola Nations

US to Track Everyone Coming from Ebola Nations

AP (Oct. 22, 2014) Stepping up their vigilance against Ebola, federal authorities said Wednesday that everyone traveling into the US from Ebola-stricken nations will be monitored for symptoms for 21 days. (Oct. 22) Video provided by AP
Powered by NewsLook.com
Doctors Help Paralysed Man Walk Again, Patient in Disbelief

Doctors Help Paralysed Man Walk Again, Patient in Disbelief

AFP (Oct. 22, 2014) Polish doctors describe how they helped a paralysed man walk again, with the patient in disbelief at the return of sensation to his legs. Duration: 1:04 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins