Cited by 245Analog and Mixed-Signal Circuit DesignNeuroscience and Neural EngineeringAdvanced Memory and Neural Computing

A three-dimensional neural recording microsystem with implantable data compression circuitry

Olsson, R.H., Wise, K.D.·2005·IEEE Journal of Solid-State Circuits

Abstract

A 256-site, fully implantable, 3-D neural recording microsystem has been developed. The microsystem incorporates four active neural probes with integrated circuitry for site selection, amplification, and multiplexing. The probes drive an embedded data-compression ASIC that successfully detects neural spikes in the presence of neural and circuit noise. The spike detection ASIC achieves a factor of 12 bandwidth reduction while preserving the key features of the action potential waveshape necessary for spike discrimination. This work extends the total number of neural channels that can be recorded across a transcutaneous inductively coupled wireless link from 25 to 312. When a spike is detected, this ASIC serially shifts the 5-bit amplitude and 5-bit address of the spike off of the chip over a single 2.5 Mb/s wired or wireless line. The spike detection ASIC occupies 6 mm/sup 2/ in 0.5 /spl mu/m features and consumes 2.6 mW while the entire microsystem consumes 5.4 mW of power from a 3-V supply.

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Crossref · 10.1109/jssc.2005.858479

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20 of 20 references verified0 citation errors · 0 not checkable

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  • Multiplexing a high-density electrode array to a smaller amplifier array is a widely used resource-sharing technique that relies on not all electrode sites providing useful information after implantation or on necessary information being obtainable from a small subset, although the useful subset is not known in advance.

    “The first widely used technique consists of multiplexing a high-density electrode array to a much smaller amplifier array. This strategy leverages the fact that not all electrode sites may provide useful information after implantation [97, 101, 145] or that the necessary information can be obtained from a small subset of electrodes, although the useful electrode subset is not known a priori [118].”

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Authors
Olsson, R. H., & Wise, K. D.
Affiliations
  • Sandia National Laboratories (US)
  • University of Michigan (US)
Venue
IEEE Journal of Solid-State Circuits
Published
2005-12
Volume
40
Issue
12
Pages
2796-2804
ISSN
0018-9200 (ISSN-L)
OpenAlex
W1608291116
Cited by
245
References
20
Citations by year
2026: 1 · 2025: 5 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 4 · 2020: 5 · 2019: 8 · 2018: 7 · 2017: 12 · 2016: 13 · 2015: 17 · 2014: 11 · 2013: 20 · 2012: 14
FWCI
11.59
Type
journal article
Language
en
Open access
closed
Locations
IEEE Journal of Solid-State Circuits (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Analog and Mixed-Signal Circuit Design
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Memory and Neural Computing
Keywords
implantable neural recording, spike detection, neural spikes, wireless data transmission, inductive coupling, low power design

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