13 July 2004 Functional mapping of the human brain with near-infrared spectroscopy in the frequency-domain
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Comparison of the spatial and temporal information retrieved from near-infrared phase and average intensity (DC) data reveals that these data types can play a complementary role in the study of the temporal and spatial features of the optical response associated with brain activation during a finger-tapping test. The optical data have been collected with a frequency-domain tissue imager at two wavelengths (690 and 830 nm) and have been analyzed using standard filtering and folding-average procedures. DC and phase data show different temporal and spatial features. A plausible explanation of the different behavior of DC and phase data has been attempted by using Monte Carlo simulations.
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Angelo Sassaroli, Yunjie Tong, Francesco Fabbri, Blaise Frederick, Perry F. Renshaw, Sergio Fantini, "Functional mapping of the human brain with near-infrared spectroscopy in the frequency-domain", Proc. SPIE 5312, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIV, (13 July 2004); doi: 10.1117/12.533168; https://doi.org/10.1117/12.533168

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