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Related Experiment Video

Updated: May 9, 2026

A Procedure for Implanting Organized Arrays of Microwires for Single-unit Recordings in Awake, Behaving Animals
10:58

A Procedure for Implanting Organized Arrays of Microwires for Single-unit Recordings in Awake, Behaving Animals

Published on: February 14, 2014

An energy-efficient micropower neural recording amplifier.

W Wattanapanitch, M Fee, R Sarpeshkar

    IEEE Transactions on Biomedical Circuits and Systems
    |July 16, 2013
    PubMed
    Summary
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    A low-power 32-channel digitally programmable neural recording integrated circuit.

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    This study presents an ultralow-power neural recording amplifier, achieving record energy efficiency. The design minimizes noise for clear neural spike and local field potential recordings.

    Area of Science:

    • Biomedical Engineering
    • Neuroscience Instrumentation
    • Low-Power Integrated Circuits

    Background:

    • Neural recording requires amplifiers with high sensitivity and low power consumption.
    • Existing amplifiers often struggle to balance noise performance with energy efficiency.
    • Common-mode noise rejection is crucial for reliable neural signal acquisition.

    Purpose of the Study:

    • To develop and characterize an ultralow-power neural recording amplifier.
    • To achieve near-theoretical input-referred noise performance.
    • To demonstrate the amplifier's capability for recording neural spikes and local field potentials (LFPs).

    Main Methods:

    • Designed a neural amplifier utilizing low-noise techniques and a differential input stage.
    • Configured the amplifier for two distinct operating modes: neural spikes and LFPs.

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    A Wireless, Bidirectional Interface for In Vivo Recording and Stimulation of Neural Activity in Freely Behaving Rats
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    A Wireless, Bidirectional Interface for In Vivo Recording and Stimulation of Neural Activity in Freely Behaving Rats

    Published on: November 7, 2017

    Related Experiment Videos

    Last Updated: May 9, 2026

    A Procedure for Implanting Organized Arrays of Microwires for Single-unit Recordings in Awake, Behaving Animals
    10:58

    A Procedure for Implanting Organized Arrays of Microwires for Single-unit Recordings in Awake, Behaving Animals

    Published on: February 14, 2014

    A Wireless, Bidirectional Interface for In Vivo Recording and Stimulation of Neural Activity in Freely Behaving Rats
    10:41

    A Wireless, Bidirectional Interface for In Vivo Recording and Stimulation of Neural Activity in Freely Behaving Rats

    Published on: November 7, 2017

  • Fabricated the amplifier using a 0.5-mum CMOS process.
  • Validated performance through circuit simulations and experimental recordings from avian brain tissue.

    • Main Results:

    • Achieved industry-leading low power consumption (7.56 µW for spikes, 2.08 µW for LFPs).
    • Demonstrated excellent noise efficiency factor (NEF) values (2.67 for spikes, 3.21 for LFPs).
    • Successfully recorded action potentials from zebra finch brain tissue, validating real-world applicability.

    Conclusions:

    • The developed neural amplifier represents a significant advancement in energy-efficient neural recording technology.
    • The design effectively minimizes noise while maintaining high gain and adjustable bandwidth.
    • This amplifier is suitable for advanced brain-computer interfaces and long-term neural monitoring applications.