Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2004 · 10 citations · 4 references
Natural SciencesNeurobiologyNeuroscienceBiomedical ImagingBiomedical OpticsSpectroscopyBrain ImagingFunctional NeuroimagingInfrared SpectroscopyNear-infrared SpectroscopyNeuroimaging PhysicsOptical SpectroscopyBrain Activation LocalizationBrain Function MappingBrain Functional ImagingFinger Tapping TestFrequency-domain Near-infrared SpectroscopyFunctional Near-infrared SpectroscopyMonte Carlo ResamplingTemporal Data Types
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.
4