Age‐related changes in brain hemodynamics; A calibrated MRI study

Blood oxygenation‐level dependent (BOLD) magnetic resonance imaging signal changes in response to stimuli have been used to evaluate age‐related changes in neuronal activity. Contradictory results from these types of experiments have been attributed to differences in cerebral blood flow (CBF) and cerebral metabolic rate of oxygen (CMRO2). To clarify the effects of these physiological parameters, we investigated the effect of age on baseline CBF and CMRO2.

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