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Wearable Wireless Functional Near-Infrared Spectroscopy System for Cognitive Activity Monitoring.

Mauro Victorio1, James Dieffenderfer2, Tanner Songkakul2

  • 1Department of Electrical and Computer Engineering, Florida International University, Miami, FL 33174, USA.

Biosensors
|February 25, 2025
PubMed
Summary

This study introduces a compact, wearable functional near-infrared spectroscopy (fNIRS) sensor for real-time brain activity monitoring. The innovative device enables long-term patient observation with unrestricted mobility and Bluetooth data transmission.

Keywords:
biosensorsbrain activitycognitive monitoringfunctional NIRS (fNIRS)near-infrared spectroscopy (NIRS)wearable devices

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Wearable Technology

Background:

  • Optimizing human performance requires real-time measurement of cognition and cognitive fatigue.
  • Near-infrared spectroscopy (NIRS) offers a practical approach to monitoring brain function, surpassing MRI in some applications.
  • Existing methods for brain activity monitoring can be cumbersome and limit user mobility.

Purpose of the Study:

  • To develop and validate an innovative functional NIRS (fNIRS) sensor system.
  • To create a compact, wearable device for long-term, real-time brain activity monitoring.
  • To enable unrestricted mobility for users during cognitive monitoring studies.

Main Methods:

  • Integration of the fNIRS system into a compact, wearable device.
  • Utilizing Bluetooth for wireless configuration and data transmission.
  • Real-time data collection, storage, and analysis via connected devices (smartphones, laptops).

Main Results:

  • The developed fNIRS sensor is sensitive to changes in oxy- and deoxy-hemoglobin in the forehead region.
  • These hemodynamic changes correlate with neuronal activity, indicating effective brain activity monitoring.
  • The wearable device successfully enabled long-term monitoring with user mobility.

Conclusions:

  • The innovative wearable fNIRS sensor provides a practical solution for real-time brain activity monitoring.
  • This technology facilitates long-term studies and patient monitoring with enhanced user mobility.
  • The sensor's sensitivity to hemodynamic changes supports its utility in cognitive and neuroscience research.