Note: Three wavelengths near-infrared spectroscopy system for compensating the light absorbance by water

M. Raheel Bhutta, Keum Shik Hong, Beop Min Kim, Melissa Jiyoun Hong, Yun Hee Kim, Se Ho Lee

Research output: Contribution to journalReview article

66 Citations (Scopus)

Abstract

Given that approximately 80% of blood is water, we develop a wireless functional near-infrared spectroscopy system that detects not only the concentration changes of oxy- and deoxy-hemoglobin (HbO and HbR) during mental activity but also that of water (H2O). Additionally, it implements a water-absorption correction algorithm that improves the HbO and HbR signal strengths during an arithmetic task. The system comprises a microcontroller, an optical probe, tri-wavelength light emitting diodes, photodiodes, a WiFi communication module, and a battery. System functionality was tested by means of arithmetic-task experiments performed by healthy male subjects.

Original languageEnglish
Article number026111
JournalReview of Scientific Instruments
Volume85
Issue number2
DOIs
Publication statusPublished - 2014 Feb 1

ASJC Scopus subject areas

  • Instrumentation

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