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Varenicline, a widely used smoking cessation drug, has partial agonistic activity at α4β2 nicotinic receptors, and full agonistic activity at α7 nicotinic receptors. Thus it may interact with cognitive processes and may alleviate some of the cognitive disturbances observed in psychotic illnesses such as schizophrenia. We aimed to test the effects of varenicline on sensorimotor gating functioning,...