Gospel! The new bionic ear is expected to "discriminate" noise and music

Gospel! The new bionic ear is expected to "discriminate" noise and music

Australian scientists have recently said that they are developing new types of portable bionic ears. By simulating the brain's use of electrical signals to capture other people's conversations, deaf patients can regain their hearing, allowing them to clearly hear people's speech and enjoy music.

The research team led by Tony Bollini, an associate professor at La Trobe University in Australia, published a paper in the journal Neuroscience of the Royal Society of Physics, saying that when people listen to others, they follow the nerve impulses from the ear to the brain. Frequency and response time are very important. The brain uses the frequency and discharge time of the electrical impulses in the nerve cells to encode the sound being heard in order to distinguish the speaker's voice from the background noise.

Bollini said that by taking into account the information related to the exact timing of nerve cell discharge, the brain can better understand the sound. The ability of those who accept this information to receive sound is greatly enhanced, and the range of volume received is greater, and these two aspects are very important for patients to understand others. Therefore, copying this information will hopefully improve the patient's ability to understand others' speech.

Currently, deaf patients either have cochlear implants or auditory brainstem implants, but both require deaf people to recognize the sound of background noise, and even if they have undergone implant surgery, they are very Hard to enjoy music.

Borini said that listening is the ability to discern sound; in terms of language ability is the ability to understand what others mean. Multi-audio brainstem implantation can produce meaningful hearing in patients with bilateral hearing neuroma, but these patients still cannot tell where the sound originates. Many patients who have undergone transplant surgery have also found it difficult to distinguish between bark and car horns.

Based on this, the researchers are studying new bionic ears, hoping that the bionic ears can restore hearing to deaf patients, allowing them to hear other people's speeches and even enjoy music in noisy environments. The researchers tested the device on experimental mice and hoped to develop new devices for humans.

Each year, approximately 1,000 patients undergo multiple auditory brain stem implants; approximately 200,000 patients undergo cochlear implant surgery each year.

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