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An Implantable Neuromorphic Sensing System Featuring Near-sensor Computation and Send-on-Delta Transmission for Wireless Neural Sensing of Peripheral Nerves (Record no. 2249)

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Personal name He, Yuming
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9 (RLIN) 2761
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Title An Implantable Neuromorphic Sensing System Featuring Near-sensor Computation and Send-on-Delta Transmission for Wireless Neural Sensing of Peripheral Nerves
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Date of publication, distribution, etc. 2022-10.
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General note /pmc/articles/PMC7614138/
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General note /pubmed/36741239
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Summary, etc. This paper presents a bio-inspired event-driven neuromorphic sensing system (NSS) capable of performing on-chip feature extraction and "send-on-delta" pulse-based transmission, targeting peripheral-nerve neural recording applications. The proposed NSS employs event-based sampling which, by leveraging the sparse nature of electroneurogram (ENG) signals, achieves a data compression ratio of >125×, while maintaining a low normalized RMS error of 4% after reconstruction. The proposed NSS consists of three sub-circuits. A clockless level-crossing (LC) ADC with background offset calibration has been employed to reduce the data rate, while maintaining a high signal to quantization noise ratio. A fully synthesized spiking neural network (SNN) extracts temporal features of compound action potential signals consumes only 13 μW. An event-driven pulse-based body channel communication (Pulse-BCC) with serialized address-event representation encoding (AER) schemes minimizes transmission energy and form factor. The prototype is fabricated in 40-nm CMOS occupying a 0.32-mm(2) active area and consumes in total 28.2 μW and 50 μW power in feature extraction and full diagnosis mode, respectively. The presented NSS also extracts temporal features of compound action potential signals with 10-μs precision.
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Language note en
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Personal name Corradi, Federico
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9 (RLIN) 2762
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Personal name Shi, Chengyao
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9 (RLIN) 2763
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Personal name van der Ven, Stan
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9 (RLIN) 2764
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Personal name Timmermans, Martijn
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9 (RLIN) 2765
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Personal name Stuijt, Jan
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9 (RLIN) 2766
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Personal name Detterer, Paul
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Personal name Harpe, Pieter
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9 (RLIN) 2768
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Personal name Lindeboom, Lucas
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9 (RLIN) 2769
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Personal name Hermeling, Evelien
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9 (RLIN) 2770
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Personal name Langereis, Geert
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9 (RLIN) 2771
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Personal name Chicca, Elisabetta
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9 (RLIN) 2772
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Personal name Liu, Yao-Hong
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Note IEEE J Solid-State Circuits
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Uniform Resource Identifier <a href="http://dx.doi.org/10.1109/JSSC.2022.3193846">http://dx.doi.org/10.1109/JSSC.2022.3193846</a>
Public note Connect to this object online.

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