<prompt> All are true about Webers syndrome EXCEPTContra-lateral hemiplegiaIpsi-lateral Oculomotor nerve palsyContra-lateral ParkinsonismInvolvement of Dorsal mid-brain  <response>: D Involvement of Dorsal mid-brain?WEBERS SYNDROME superior alternating hemiplegia is a form of stroke characterized by the presence of an ipsi-lateral oculomotor nerve palsy and contra-lateral hemiparesis or hemiplegia.oIt is caused by mid-brain infarction as a result of occlusion of the paramedian branches of the posterior cerebral artery or of basilar bifurcation perforating arteries. VENTRAL MID-BRAIN LESION WEBERS SYNDROMEOn side of lesionOn side opposite lesion. Diplopia and dilated pupil oculomotor nerve. Hemiplegia mainly upper limb and face pyramidal tract. Ataxia right dentothalamic tract before crossingPCA P1 level of branches to mid-brain Webers syndrome-Manifestations: At level of mid-brain-Motor Weakness - Contra-lateral hemiplegia upper lower extremity.-Corticospinal tract: Corticobulbar fibers in the cerebral peduncle-Ipsilateral Lateral gaze weakness diplopia: CN 3 fibers LMN.-PE eye movements: Patient is unable to move eye up, down, or medially in the epsilateral side.-Pupillary dilatation: If Edinger-Westphal nucleus are involved.DORSAL MID BRAIN LESION CLAUDES SYNDROMEOn side of lesionOn side opposite lesion. Diplopia dilated pupil oculomotor nerve. Loss of pain and temp. Sensation from trunk and limbs. Spinothalamic tract. Horners syndrome sympathetic. Loss of pain and temp, sensation from face Trigeminothalamic tract. Pupil may be dilated or constricted and ptosis may be partial or complete. Loss of position sense in limbs Medial lemniscus. Resting tremor Red nucleus. Ataxia left Dentatothalamic tract after crossing. Monoplegia Pyramidal tractMID-BRAIN EPONEMIC SYNDROMES-Nothnagels syndrome: Injury to the superior cerebellar peduncle causes ipsi-lateral oculomotor palsy and-contra-lateral cerebellar ataxia.-Benedikts syndrome: Injury to the red nucleus results in ipsi-lateral oculomotor palsy and contra-lateral tremor, chorea and athetosis.-Claudes syndrome: Nothnagels syndrome Benedikts syndrome, by injury to both the red nucleus and the superior cerebellar peduncle.-P1 Syndromes: mid-brain, subthalamic thalamic signs, due to disease of the proximal P1 segment of the PCA or its-Penetrating branches thalamogeniculate, Percheron posterior choroidal arteries-Claudes syndrome 3rd nerve palsy with contra-lateral ataxia-Webers Syndrome 3rd nerve palsy with contra-lateral hemeplegia-Dejerine-Roussy syndrome: Contra-lateral hemisensory loss followed later by an agonising, searing or burning pain in the effected areas.-P2 Syndromes: Cortical temporal and occipital lobe signs, due to occlusion of the P2 segment distal to the junction of the PCA with the posterior communicating artery.-Balints syndrome, disorder of orderly visual scanning of environment results form infarction secondary to low flow in watershed between distal PCA MCA territories after cardiac arrest shows with features of Palinopsia Simultanagnosia, 