A Fully-Implantable Cochlear Implant SoC With Piezoelectric Middle-Ear Sensor and Arbitrary Waveform Neural Stimulation
| العنوان: | A Fully-Implantable Cochlear Implant SoC With Piezoelectric Middle-Ear Sensor and Arbitrary Waveform Neural Stimulation |
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| المؤلفون: | Anantha P. Chandrakasan, Hideko Heidi Nakajima, Marcus Yip, Rui Jin, Konstantina M. Stankovic |
| المساهمون: | Massachusetts Institute of Technology. Microsystems Technology Laboratories, Yip, Marcus, Jin, Rui, Chandrakasan, Anantha P |
| المصدر: | PMC |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Engineering, Microphone, Piezoelectric sensor, business.industry, Acoustics, medicine.medical_treatment, computer.software_genre, Chip, Article, CMOS, Interfacing, Cochlear implant, Hardware_INTEGRATEDCIRCUITS, otorhinolaryngologic diseases, medicine, Waveform, sense organs, Electrical and Electronic Engineering, Audio signal processing, business, computer |
| الوصف: | A system-on-chip for an invisible, fully-implantable cochlear implant is presented. Implantable acoustic sensing is achieved by interfacing the SoC to a piezoelectric sensor that detects the sound-induced motion of the middle ear. Measurements from human cadaveric ears demonstrate that the sensor can detect sounds between 40 and 90 dB SPL over the speech bandwidth. A highly-reconfigurable digital sound processor enables system power scalability by reconfiguring the number of channels, and provides programmable features to enable a patient-specific fit. A mixed-signal arbitrary waveform neural stimulator enables energy-optimal stimulation pulses to be delivered to the auditory nerve. The energy-optimal waveform is validated with in-vivo measurements from four human subjects which show a 15% to 35% energy saving over the conventional rectangular waveform. Prototyped in a 0.18 μm high-voltage CMOS technology, the SoC in 8-channel mode consumes 572 μW of power including stimulation. The SoC integrates implantable acoustic sensing, sound processing, and neural stimulation on one chip to minimize the implant size, and proof-of-concept is demonstrated with measurements from a human cadaver ear. |
| وصف الملف: | application/pdf |
| تدمد: | 1558-173X 0018-9200 |
| DOI: | 10.1109/jssc.2014.2355822 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71c846ec601f3b306b72ae53a5b64cf7 https://doi.org/10.1109/jssc.2014.2355822 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....71c846ec601f3b306b72ae53a5b64cf7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1558173X 00189200 |
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| DOI: | 10.1109/jssc.2014.2355822 |