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Some parents, teachers and doctors think that a child who is deaf in one ear will not have any problems at home or at school because the other ear is normal. Washington, May 10 : Hearing loss in a single ear of a child hurts his ability to comprehend and use language, says a new study. Hearing loss in one ear can stem from congenital abnormalities in the ear, head trauma or infections such as meningitis. Children with hearing loss in one ear may go undetected because they can appear to have normal hearing.
Even children with recognised one-side hearing loss often aren't fitted with hearing aids and often don't receive accommodations for disability. Lieu says the study demonstrated the strongest effect from hearing loss in one ear in children who are living below the poverty level or with mothers who have little education. The children were tested with the Oral and Written Language Scales (OWLS), a widely used tool to assess language comprehension and expression. An average OWLS score is 100, and hearing loss in one ear caused about a 10-point drop in scores.
The oral composite score - which reflects both children's ability to understand what is said to them and their ability to respond or express themselves - averaged 90 in children with hearing loss in one ear, said a WUSM-SL release.
With standard hearing aids, an external microphone picks up the sound, amplifies it and delivers into the ear.


A year-long trial of the device, which costs around A?600, is now under way at various centres across Europe, including University Hospital Southampton. The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline. Now our study has shown that on average, children with hearing loss in one ear have poorer oral language scores than children with hearing in both ears," Lieu says. Their difficulty in hearing may be mistaken simply for lack of attention or selective hearing, says Lieu, also assistant professor of otolaryngology. Each was matched with a sibling with normal hearing so that the researchers could minimise the possible effects of environmental and genetic factors on the children's language skills.
The system, now being tested in Britain, works by re-routing sounds from the deaf ear to the working one.Around one in ten adults suffer from some degree of single-sided hearing loss, with around 10,000 new cases of complete deafness in one ear diagnosed each year.
Unfortunately, these devices often dona€™t work for people with single-sided hearing loss because their inner ear or nerves are too badly damaged.The new hearing aid, called the SoundBite, uses the bones of the head to conduct the sound to the working ear. The vibrations are conducted via the teeth, through bone, to the working ear, where the sound vibrations are turned into nerve impulses, and sent to the brain.Some types of hearing aid already use bone conduction, known as bone-anchored hearing aids. Commenting on the technology, Andrew McCombe, ear, nose and throat surgeon at Frimley Park Hospital, Surrey, said: a€?This is a very interesting and clever idea. Imgurer raingoose has recently uploaded a photo of her minimalist tattoo of a muted speaker to show that she’s deaf in her left ear.


Soon, she got a response from another user, pawsed, who got inked with a muted microphone for the same reason. These cells move in response to the vibrations, and this movement is converted into electrical impulses that are sent along nerves to the brain, which interprets them as sounds. We actually hear sounds via bone conduction all the time a€” for example, when we crunch on crisps or an apple, or scratch the scalp.The SoundBite consists of a tiny microphone, placed just inside the ear canal of the impaired ear to capture the sound travelling into the ear.
With these devices, a small titanium plate is inserted into the back of the skull, behind the ear. The plate detects sound vibrations, and sends these through the skull.However, these need to be surgically fitted, and are visible on the outside of the head.
The scientists, from University College London, studied response times in volunteers and revealed that the brain is finely tuned to noticing new sounds a€” a skill evolved from stone-age times to quickly detect potential dangers or predators. A study published in the journal Otology & Neurotology showed that the new device improved the ability of patients to understand speech in noisy environments by an average of 25 per cent, and that for one third of the patients, the improvement exceeded 30a€‰a€‰per cent. However, detecting changing or disappearing sounds is not as crucial to survival, say the researchers, and as a consequence our brains take longer to detect them.



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