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Some children are born with 'temporary deafness' and do not require cochlear implant

Clinical research conducted in the Department of Communication Disorders at the University of Haifa revealed that some children who are born deaf "recover" from their deafness and do not require surgical intervention. To date, most babies who are born deaf are referred for a cochlear implant. "Many parents will say to me: 'My child hears; if I call him, he responds'. Nobody listens to them because diagnostic medical equipment did not register any hearing. It seems that these parents are smarter than our equipment," said Prof. Joseph Attias, a neurophysiologist and audiologist in the Department of Communication Disorders at the University of Haifa, who made the discovery.

There are two causes of congenital deafness among children. One is the lack of hair cells, receptors in the inner ear that convert sounds into pulse signals that activate the auditory nerve. The second cause is a malfunction of the nerves. A child may be born with what appears to be a normal inner ear, but the hair cells do not "communicate" with the auditory nerves and the child cannot hear. To date, doctors have recommended the same treatment for all children born deaf. Once a child has been diagnosed as deaf, doctors recommend a cochlear implant, a surgically- implanted electronic device that bypasses the hair cells and directly stimulates the auditory nerve. Prof. Attias stresses that a cochlear implant is an excellent treatment for children with congenital deafness whose hearing does not improve over time. However, it appears that some children are born with "temporary deafness" a condition previously unidentified.

This discovery, like other revolutionary discoveries, was made by chance. A child who was born with malfunctioning hair cells and was scheduled for a cochlear implant was referred to Prof. Attias for a pre-surgical evaluation. The evaluation found that the child's brain and auditory nerves exhibited beginning responses to sound stimuli. The surgery was postpo
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Contact: Amir Gilat
agilat@univ.haifa.ac.il
University of Haifa
16-May-2007


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