<prompt> Hemiballismus is due to lesion in?Ipsilateral Caudate nucleusContralateral sub-thalamic lesionContralateral PutamenIpsilateral sub-thalamic lesion  <response>: Ans. b Contralateral subthalamic lesionRef: Harrison 19th ed. 2623LesionManifestation Caudate nucleusContralateral chorea Globus pallidusContralateral atheotosis Sub-thalamic nucleusContralateral hemiballismus CerebellumIpsilateral intentional tremors Internal capsuleContra-lateral hemiplegia with hemi- anesthesia Ventral ponsLocked in syndrome 