<prompt> All are feature of Wernickes encephalopathy,Except:Cogwheel rigidityAlteration in mental function6th nerve palsyAtaxia  <response>: Ans. is a Cogwheel rigidity Ref Harrison, 16e, p 1636 15e, p 2496.Wernickes disease is seen in Alcoholic patients with chronic thiamine deficiency.The characteristic clinical trial is that of:Global confusionOphthalmoplegia Ataxia Mnemonic: GOAOther ocular motor abnormalities include:horizontal nystagmus on lateral gaze,conjugate gaze palsiesrarely ptosisPupil are usually spared but they may become miotic.When there is an additional loss of memory and a confabulatory psychosis, the syndrome is known as Wernicke- Korsakoff syndrome . 