Hearing Preservation and Electro-acoustic Stimulation in Cochlear Implants

Kay‐Rivest, Emily; Roland, J. Thomas; Jethanamest, Daniel

doi:10.1007/978-981-19-0452-3_15

Cited by 1 publication

(3 citation statements)

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“…If the laser can directly activate auditory nerves, these techniques could pave the way for a groundbreaking hybrid auditory prosthesis, merging laser-evoked perception with residual hearing. Traditional hybrid cochlear implants aim to deliver high-frequency electric hearing while preserving low-frequency residual acoustic hearing ( 3, 4 ). However, hearing preservation has become an important topic of the hybrid cochlear implants due to the complications of post-surgical implantation ( 3, 5 ).…”

Section: Resultsmentioning

confidence: 99%

“…Traditional hybrid cochlear implants aim to deliver high-frequency electric hearing while preserving low-frequency residual acoustic hearing ( 3, 4 ). However, hearing preservation has become an important topic of the hybrid cochlear implants due to the complications of post-surgical implantation ( 3, 5 ). Noncontact laser stimulation potentially mitigates this risk.…”

Section: Resultsmentioning

confidence: 99%

“…Approximately 430 million people, constituting 5% of the world’s total population, suffer from hearing loss, leading to significant communication challenges and social isolation ( 1, 2 ). For those severely hearing impaired, implantable auditory devices, such as hybrid cochlear implants (which combine hearing aid and cochlear implant technology), represent a limited option ( 3, 4 ). However, these devices require surgical intervention, and 30%–55% of hearing-impaired patients encounter over 30 dB HL of residual hearing loss due to the complications of post-surgical implantation ( 5 ); implantable auditory devices pose challenges, especially in preserving residual hearing for hybrid implants.…”

Section: Introductionmentioning

confidence: 99%

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Non-invasive optical synthetization of hearing sensation in non-genetically modified animal

Tamai

Uenaka

Okamoto

et al. 2023

Preprint

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The application of infrared laser stimulation to brain-machine interfaces, such as cochlear implants, has been discussed over the last decade because the infrared laser can activate spatially selected neural populations without delivering exogenous agents to tissues. Here, this study demonstrated for the first that the laser irradiation of the peripheral sensory organ, the cochlea, can induce an unequivocal behavioral auditory response. We proved that the animals, Mongolian gerbils (Meriones unguiculatus), can be classically conditioned with a laser stimulus in a similar way to an auditory stimulus. Additionally, the auditory masking significantly inhibited the laser-conditioned response, and the auditory-conditioned animals exhibited stimulus generalization to laser stimulation. In a subsequent experiment, simultaneous presentation of auditory and laser stimulation successfully elicited nonlinear amplification in both the auditory cortical and behavioral response. These results suggest that the infrared laser irradiation to the cochlea can evoke and possibly enhance auditory perception and has real potential to be implemented in an auditory prosthesis.

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