a neurological disorder elicited by a deficiency of vitamin B. The principal indicators are confusion, occulomotor irregularities, and ataxia. The disorder is most often correlated to persistent alcoholism but is additionally seen in instances of gastric cancer, pernicious anemia, and malnutrition. These indicators often are corrected with thiamine remediation, even though most people then grow serious anterograde and retrograde amnesia in addition to disability in other regions of mental operating, inclusive of executive operates . Commonly referred to as cerebral beriberi.