Neurocognitive functioning in euthymic patients with bipolar type I disorder.

INTRODUCTION: Bipolar disorder (BD) is a chronic mental disorder that affects 1-3% of the population, and is characterized by affective episodes that alternate with periods of euthymia. Although traditionally patients were thought to return to premorbid functioning levels during the inter-episode periods, recent evidence suggests that cognitive deficits persist even during periods of euthymia, and may impair patients working and functioning …