<prompt> Wernicke;s encephalopathy involvesMammillary bodyThalamusFrontal lobeArcuate fasciculus  <response>: Wernickes encephalopathy : The neuropathological lesions are symmetrical and paraventricular, involving the mammillary bodies, the thalamus, the hypothalamus, the midbrain, the pons, the medulla, the fornix, and the cerebellum. Ref: Synopsis of Psychiatry, 11th edition, page 632. 