Sleep disturbance and cognitive deficits in bipolar disorder: Toward an integrated examination of disorder maintenance and functional impairment

► We discuss the high prevalence of sleep disruption during the euthymic phase of bipolar disorder. ► Executive functioning, verbal learning and attention deficits persist in the euthymic phase. ► Cognitive deficits in sleep disorders/sleep-deprived subjects are similar to bipolar disorder. ► An integration of sleep and neurocognitive research is proposed. ► Endogenous cognitive endophenotypes and sleep-mediated cognitive endophenotypes may co-exist.