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Dynamic relationship between cerebral blood flow (CBF) measured by NIRS oxy-deoxyhemoblobin difference (DHb) versus mean arterial blood pressure (MAP) and cerebral blood volume (CBV) measured by NIRS total hemoglobin (THb) versus MAP. During functional autoregulation (1), MAP and CBV are out-of-phase (moving in opposite directions) and during dysfunctional autoregulation (2), MAP and CBV are in-phase (moving in same direction).
