Taste Perception and Caffeine Use: A fMRI Study

Blood-oxygenation-level-dependent (BOLD) activations of caffeine drinkers and non-drinkers were measured during a functional magnetic resonance imaging (fMRI) scan. The two groups exhibited significantly different brain activations during the hedonic evaluation of caffeine, saccharine, and sucrose, suggesting that neuronal processes are altered as a result of habitual caffeine use.