Cart is empty Monitoring the flow of blood to the brain can reveal much about how it works. An increase in blood flow usually accompanies neuronal activity, whereas a decrease in the flow can be indicative of various abnormalities, e.g., as a risk indicator leading to stroke. Modern optical technologies such as diffuse correlation spectroscopy (DCS) enable scientists to measure blood flow to the brain noninvasively by shining a laser on scalp and analyzing the diffused light.
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