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Aslin 2015
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Hemodynamic Correlates of Cognition in Human Infants
TECHNIQUES FOR MEASURING BLOOD OXYGENATION
Neural firing is metabolically demanding and results first in a local increase in deoxygenated
hemoglobin (deOxy-Hb), followed immediately by a compensatory sustained increase in
oxygenated hemoglobin (Oxy-Hb) and subsequent decrease in deOxy-Hb (see Figure 1). The
specific relationship of the circulatory system to local changes in neural activity is referred to as
neurovascular coupling.