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Updated: Nov 2, 2025

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Energy-Efficient Integrated Circuit Solutions Toward Miniaturized Closed-Loop Neural Interface Systems.

Jaeouk Cho1, Geunchang Seong1, Yonghee Chang1

  • 1Biomedical Energy-Efficient Electronics Laboratory, Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea.

Frontiers in Neuroscience
|June 17, 2021
PubMed
Summary
This summary is machine-generated.

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Miniaturized closed-loop neural interfaces offer efficient nerve stimulation with reduced side effects. This review explores integrated circuit techniques to overcome hardware challenges in these advanced implantable devices.

Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Electrical Engineering

Background:

  • Miniaturized implantable devices are vital for neural interfaces, monitoring and modulating neural activity in the central and peripheral nervous systems.
  • Compact, wireless, closed-loop systems offer advantages over open-loop systems, including reduced power consumption and fewer side effects from continuous stimulation.
  • Low-energy wireless devices minimize foreign body reactions and the need for repeated surgeries.

Purpose of the Study:

  • To review recent advancements in miniaturized closed-loop neural interface systems.
  • To discuss integrated circuit (IC) techniques addressing hardware design challenges in these systems.
  • To highlight solutions for artifact management and efficient power delivery in neural interfaces.

Main Methods:

Keywords:
ADC-direct front-endclosed-loop systemelectroceuticalsminiaturizationneural interfacestimulation artifact removalwireless power transfer

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  • Review of current research on miniaturized closed-loop neural interface systems.
  • Analysis of integrated circuit (IC) techniques for neural recording and stimulation.
  • Examination of strategies for real-time stimulation artifact removal and wireless power delivery.

Main Results:

  • Closed-loop systems demonstrate reduced power consumption and fewer side effects compared to open-loop systems.
  • Significant hardware challenges exist, including neural activity recording with stimulation artifacts and energy-efficient wireless power transfer.
  • IC techniques are crucial for developing effective miniaturized closed-loop neural interfaces.

Conclusions:

  • Miniaturized closed-loop neural interfaces hold promise for improved neural modulation.
  • Overcoming hardware challenges through advanced IC design is key to realizing the full potential of these devices.
  • Further research in integrated circuit techniques will drive innovation in neural interface technology.