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A spectroscopy technique developed at the University of California, Davis (UC Davis) is able to noninvasively measure brain blood flow and activity. The method, called functional interferometric diffusing wave spectroscopy (fiDWS), has the potential for use in assessing brain injuries and in neuroscience research. It also promises to be cheaper than existing technology, which cannot be applied continuously or at the bedside.
The method harnesses near-infrared light’s ability to penetrate through body tissue; if one shines a near-infrared laser on a person’s forehead, the light will be scattered many times by the tissue, including blood cells. By picking up the fluctuation signal of the light that finds its way back out of…READ MORE