Key result
A newly developed wireless functional near-infrared spectroscopy system with a water-absorption correction algorithm improved HbO and HbR signal strengths during arithmetic tasks in healthy men.
A novel wireless fNIRS system incorporating water-absorption correction improves the detection of hemoglobin concentration changes during mental tasks.
Should not yet change practice; extends fNIRS instrumentation but leaves open clinical validation.
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.
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Bhutta et al. (2014) studied Healthy. Three wavelengths near-infrared spectroscopy system with water-absorption correction algorithm was evaluated on HbO and HbR signal strengths during an arithmetic task. A newly developed wireless functional near-infrared spectroscopy system with a water-absorption correction algorithm improved HbO and HbR signal strengths during arithmetic tasks in healthy men.
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