Science of Human and Communication Who will start speak

Ear's delicate coding mechanism

- Conversion from amplitude modulation to frequency modulation in the inner ear -

Abstract

The ear works as an amplifier. We have been investigating its characteristics by using otoacoustic emissionsー “sounds from the ear”, and have revealed that the ear does not simply amplify sounds. Here we report our new finding that the ear translates sound intensity information into timing information of neural spikes. Prior to this finding, sound intensity information was believed to be expressed as the intensity of neural responses. Our finding questions the conventional belief about how we perceive the intensity of sounds, and it has significant implications on the disabilities caused by aging-related malfunctions of the ear. The study should also contribute to improving the performance of cochlear implants and hearing aids. 

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Poster


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Presenters

Sho Otsuka
Sho Otsuka
Human Information Science Laboratory
Shigeto Furukawa
Shigeto Furukawa
Human Information Science Laboratory
Takuya Komura
Takuya Komura
Human Information Science Laboratory
Yuuki Oishi
Yuuki Oishi
Human Information Science Laboratory
Hsin-I Liao
Hsin-I Liao
Human Information Science Laboratory