This study investigated the activation of brain regions to visual smoking cues in smokers before and after cessation treatment using an event-related design fMRI. The result demonstrated that smokers will have good tolerance to smoking-related stimuli after using varenicline. This may explain why the curative effect of varenicline is better than NRT which has been related to an increased the brain response. The results provide further evidence for medication choice of clinicians for smoking cessation.
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