Journal ArticleDOI
A Fully-Integrated, Miniaturized (0.125 mm²) 10.5 µW Wireless Neural Sensor
William James Biederman,Daniel J. Yeager,Nathan Narevsky,Aaron C. Koralek,Jose M. Carmena,Elad Alon,Jan M. Rabaey +6 more
TLDR
A wirelessly powered 0.125 mm2 65 nm CMOS IC for Brain-Machine Interface applications integrates four 1.5 μW amplifiers with power conditioning and communication circuitry to create a multi-node backscatter frequency locks to a wireless interrogator using a frequency-domain multiple access communication scheme.Abstract:
A wirelessly powered 0.125 mm2 65 nm CMOS IC for Brain-Machine Interface applications integrates four 1.5 μW amplifiers (6.5 μVrms input-referred noise with 10 kHz bandwidth) with power conditioning and communication circuitry. The multi-node backscatter frequency locks to a wireless interrogator using a frequency-domain multiple access communication scheme. The full system, verified with wirelessly powered in vivo recordings, consumes 10.5 μW and operates at 1 mm range in air with 50 mW transmit power.read more
Citations
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Journal ArticleDOI
Wireless Recording in the Peripheral Nervous System with Ultrasonic Neural Dust
Dongjin Seo,Ryan Neely,Konlin Shen,Utkarsh Singhal,Elad Alon,Jan M. Rabaey,Jose M. Carmena,Jose M. Carmena,Michel M. Maharbiz +8 more
TL;DR: Neural dust is demonstrated, a wireless and scalable ultrasonic backscatter system for powering and communicating with implanted bioelectronics and passive, battery-less communication using backscatter enables high-fidelity transmission of electromyogram (EMG) and electroneurogram (ENG) signals from anesthetized rats.
Journal ArticleDOI
Challenges and opportunities for large-scale electrophysiology with Neuropixels probes
TL;DR: The opportunities afforded by Neuropixels probes for large-scale electrophysiology, the challenges associated with data processing and anatomical localization, and avenues for further improvements of the technology are discussed.
Journal ArticleDOI
Optimal Design of Wireless Power Transmission Links for Millimeter-Sized Biomedical Implants
Dukju Ahn,Maysam Ghovanloo +1 more
TL;DR: The design procedure was verified through full-wave electromagnetic field simulations and measurements using de-embedding method, and it was found that even in the frequency range at which the PTE is relatively flat, the tissue loss per unit delivered power can be significantly different for each frequency.
Proceedings ArticleDOI
Inter-Technology Backscatter: Towards Internet Connectivity for Implanted Devices
TL;DR: The inter-technology backscatter approach as discussed by the authors transforms wireless transmissions from one technology to another, on the air, by backscattering Bluetooth transmissions to create Wi-Fi and ZigBee-compatible signals.
Journal ArticleDOI
Physical principles for scalable neural recording
Adam H. Marblestone,Bradley M. Zamft,Yael G. Maguire,Mikhail G. Shapiro,Thaddeus R Cybulski,Joshua I. Glaser,Dario Amodei,P. Benjamin Stranges,Reza Kalhor,David Allen Dalrymple,Dongjin Seo,Elad Alon,Michel M. Maharbiz,Jose M. Carmena,Jan M. Rabaey,Edward S. Boyden,George M. Church,Konrad P. Kording,Konrad P. Kording +18 more
TL;DR: In this paper, the authors analyze the scalability of each method, concentrating on the limitations imposed by spatio-temporal resolution, energy dissipation, and volume displacement, and find that all existing approaches require orders of magnitude improvement in key parameters.
References
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Journal ArticleDOI
A low-power low-noise CMOS amplifier for neural recording applications
R.R. Harrison,C.T. Charles +1 more
TL;DR: In this article, a low-noise low-power biosignal amplifiers capable of amplifying signals in the millihertz-to-kilohertz range while rejecting large dc offsets generated at the electrode-tissue interface is presented.
Journal ArticleDOI
A Low-Power Integrated Circuit for a Wireless 100-Electrode Neural Recording System
Reid R. Harrison,P.T. Watkins,R.J. Kier,R.O. Lovejoy,D. Black,Richard A. Normann,Florian Solzbacher +6 more
TL;DR: A prototype integrated circuit for wireless neural recording from a 100-channel microelectrode array was developed and a two-chip system was used to record neural signals from a Utah Electrode Array in cat cortex and transmit the digitized signals wirelessly to a receiver.
Proceedings ArticleDOI
A low-power, low-noise CMOS amplifier for neural recording applications
TL;DR: A novel bioamplifier that uses a MOS-bipolar pseudo-resistor to amplify signals down to the mHz range while rejecting large dc offsets and it is demonstrated that the VLSI implementation approaches the theoretical noise-power tradeoff limit.
Journal ArticleDOI
An Energy-Efficient Micropower Neural Recording Amplifier
TL;DR: The amplifier appears to be the lowest power and most energy-efficient neural recording amplifier reported to date and the low-noise design techniques that help the neural amplifier achieve input-referred noise that is near the theoretical limit of any amplifier using a differential pair as an input stage.
Proceedings ArticleDOI
Designing Efficient Inductive Power Links for Implantable Devices
TL;DR: A new, complete expression for total power link efficiency is introduced for planar spiral "pancake" coils at low RF frequencies (100 kHz -10 MHz) to consider practical design constraints such as component variation, power amplifier limitations, and coil voltage limits.
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