By synchronizing signals from two individual cochlear implants, scientists can make individuals who are deaf, hear in stereo like normal people. The findings of this study are going to be discussed at the 175th Meeting of the Acoustical Society of America.
"Twenty years ago, [the medical community] decided to give [deaf] people two implants, one in each ear, to see if it would improve their ability to hear better in noisy environments, so that children could integrate into classrooms and adults into the workplace more easily," Litovsky said. "I believe bilateral implantation has had a significant, positive impact on their quality of life, but they still struggle with noisy environments."
Sign Language Exposure Affects Kids With Cochlear Implants
A cochlear implant allows many people to recognize warning signals, understand other sounds in the environment, and understand speech in person or over the telephone.
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‘Currently, individual cochlear implants send information to the brain independently, but the brain does not integrate the signals in an optimal way, and so a new technique has to be used to synchronize those two cochlear signals that stimulate the brain.’
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During the 175th Meeting of the Acoustical Society of America, being held May 7-11, 2018, in Minneapolis, Minnesota, Litovsky will present data showing a new technique that synchronizes the cochlear signals that stimulate the brain in a way that is similar to people who can hear normally.
"The first time I present a [deaf] child or adult with sounds that are truly coordinated, their face lights up as they experience that aha! moment where they truly hear a stereo sound," Litovsky said. "The goal is to make this method work outside the lab, but it remains a challenge from an engineering point of view."
![People With Cochlear Implants Can Listen to Specialized Music Soon]( "People With Cochlear Implants Can Listen to Specialized Music Soon")
Cochlear implants are designed to process speech, which is a much simpler auditory signal compared with music.
According to Litovsky, the brain acts like a little computer. It uses the synchronized information to calculate the difference as sound waves arrive at each ear from different locations. These mental calculations help people locate sounds and separate speech from noise. Currently, individual cochlear implants send information to the brain independently, but the brain does not integrate the signals in an optimal way.
Cochlear implants do not restore the ear's ability to pick up soundwaves. Rather, these surgically implanted devices bypass the damaged inner ear and translate sound into electrical pulses that stimulate the auditory nerve. The Food and Drug Administration has approved the implants in children as young as one year of age.
Litovsky is committed to synchronizing auditory experiences, especially for young children. The brain loses plasticity during development, so it is harder to learn to synchronize sounds later in life.
Now, the engineering setup for the technique is limited to the laboratory, but she hopes that researchers can eventually partner with implant manufacturers to make synchronous hearing a reality.
For Litovsky, being able to get to know deaf adults and children and seeing how their lives are improved by the implants makes all of these challenges worth the struggle.
Source: Eurekalert
People With Cochlear Implants Can Listen to Specialized Music Soon
Cochlear implants are designed to process speech, which is a much simpler auditory signal compared with music.
Advertisement
According to Litovsky, the brain acts like a little computer. It uses the synchronized information to calculate the difference as sound waves arrive at each ear from different locations. These mental calculations help people locate sounds and separate speech from noise. Currently, individual cochlear implants send information to the brain independently, but the brain does not integrate the signals in an optimal way.
Cochlear implants do not restore the ear's ability to pick up soundwaves. Rather, these surgically implanted devices bypass the damaged inner ear and translate sound into electrical pulses that stimulate the auditory nerve. The Food and Drug Administration has approved the implants in children as young as one year of age.
Litovsky is committed to synchronizing auditory experiences, especially for young children. The brain loses plasticity during development, so it is harder to learn to synchronize sounds later in life.
Now, the engineering setup for the technique is limited to the laboratory, but she hopes that researchers can eventually partner with implant manufacturers to make synchronous hearing a reality.
For Litovsky, being able to get to know deaf adults and children and seeing how their lives are improved by the implants makes all of these challenges worth the struggle.
Source: Eurekalert
Cochlear Implants Significantly Increase Cognitive Impairment Risk in Children
Researchers at Indiana University suggest the risk of cognitive impairment was five times higher in children with profound deafness.
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 Cochlear Implants Now Come Without Exterior HardwareResearchers come up with a new type of cochlear implant - a medical device that electrically stimulates the auditory nerve - that does not require an external device and wiring. | Advertisement
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