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Related Experiment Video

Updated: May 9, 2026

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

A mixed-signal multichip neural recording interface with bandwidth reduction.

B Gosselin, A E Ayoub, J-F Roy

    IEEE Transactions on Biomedical Circuits and Systems
    |July 16, 2013
    PubMed
    Summary

    We developed a compact, low-power multichip system for high-density neural recordings. This medical-grade device enables scalable, long-term brain-computer interfaces with significant data bandwidth reduction.

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    Area of Science:

    • Neuroscience
    • Biomedical Engineering
    • Electrical Engineering
    • Materials Science

    Background:

    • High-density neural recordings are crucial for understanding brain function and developing advanced brain-computer interfaces.
    • Existing systems often face challenges with power consumption, size, and data bandwidth, limiting their long-term implantability and scalability.

    Purpose of the Study:

    • To present a novel multichip structure for medical-grade neural recordings.
    • To demonstrate a compact, low-power integrated system for efficient neural signal acquisition and data transmission.
    • To validate the performance of the proposed system for scalable, long-term neural monitoring.

    Main Methods:

    • Development of a mixed-signal integrated circuit (IC) for neural signal conditioning, digitization, and multiplexing.

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

    Published on: February 14, 2014

    Related Experiment Videos

    Last Updated: May 9, 2026

    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

    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

  • Integration of a digital IC for control, bandwidth reduction via action potential detection and waveform capture, and data communication.
  • Utilization of a vertical integration approach with CMOS 0.18-µm fabrication for compact chip stacking on a stainless-steel microelectrode array.

    • Main Results:

    • The system integrates 16 channels, with scalability to hundreds, demonstrating high parallelism and low-power design.
    • Achieved a significant bandwidth reduction factor of up to 48 with typical recordings through on-chip data buffering.
    • Demonstrated low power consumption (138 µW/channel) and a compact size (2.30 mm²) for the integrated interface.

    Conclusions:

    • The presented multichip structure offers a scalable, compact, and power-efficient solution for high-density neural recordings.
    • The device is suitable for safety and long-term implantability, paving the way for advanced neural interfaces.
    • Validated performance on a testbench indicates the system's readiness for real-world neural recording applications.