The Effects of Tea and Caffeine on Cerebral Blood Flow Measured Using Arterial Spin Labelling

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accounted acquisition acting acutely administered affected agreement alcohol analyses approved arch arrived arterial arteries assuming bilateral black blinded blood bottom brain caffeine cancer capsule cardiovascular cerebral chronically close coffee committee compartment components conduit constituents consumed consumption containing contains control cover crossover cups decaffeinated delay determine dilatory disease dopamine dose doses double driven elucidated enabling ensure entirely equivalent ethics exclude exert existence extract fasted find findings flow form funded global half healthy hours house humans improve included influence intervention interventions involving journal kingdom knowledge label least limit males maps measured mechanisms model moderate nature neuronal notion observe occipital overall pairs part pharmacology placebo post predefined presence previous prior produce protocol quantitative receptor receptors reduce reduced reduction reductions regional remains remove resolution respectively response responses resting scanned school screening seem sensitive separate solids spin square statistical stroke structural subjects suggest suggesting suggests supported table tighter took toolbox toxicology twice variance vascular whole years