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Wearable, Integrated EEG-fNIRS Technologies: A Review.

Julie Uchitel1,2, Ernesto E Vidal-Rosas1, Robert J Cooper1

  • 1DOT-HUB, Department of Medical Physics and Biomedical Engineering, University College London, London WC1E 6BT, UK.

Sensors (Basel, Switzerland)
|September 28, 2021
PubMed
Summary

Advancements in wearable electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) systems are crucial for multimodal brain function assessment. This review outlines progress in integrated EEG-fNIRS technology for improved data quality and comfort.

Keywords:
EEGdiffuse optical tomographyfNIRSintegratedmultimodalwearable

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Wearable Technology

Background:

  • Simultaneous electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) offer comprehensive brain function assessment.
  • Existing EEG-fNIRS systems have limitations in wearability, comfort, and long-term monitoring capabilities.
  • Developing integrated, wearable EEG-fNIRS technology is essential for advancing brain science research.

Purpose of the Study:

  • To review the progress in developing wearable, integrated EEG-fNIRS systems.
  • To provide a roadmap for future generations of wearable EEG-fNIRS technology.
  • To discuss the attributes, advantages, and disadvantages of current integrated systems.

Main Methods:

  • Review of current literature and technological advancements in integrated EEG-fNIRS systems.
  • Analysis of discrete component-based and microchip-based EEG-fNIRS technologies.
  • Evaluation of modular systems, miniaturization, wireless capabilities, and shared ADC architectures.

Main Results:

  • Significant progress has been made in developing discrete and microchip-based integrated EEG-fNIRS systems.
  • Key advancements include modular designs, miniaturized form factors, wireless connectivity, and shared ADC architectures.
  • Current technologies show promise for enhanced data quality, wearability, and subject comfort.

Conclusions:

  • Wearable, integrated EEG-fNIRS systems represent a critical evolution in brain function assessment.
  • Continued development focusing on system integration, miniaturization, and user comfort is vital.
  • This review serves as a guide for the next generation of advanced, wearable EEG-fNIRS technology.