<prompt> Weber syndrome occur due to -3rd cranial nerve paralysis4th cranial nerve paralysis5th cranial nerve paralysis6th cranial nerve paralysis  <response>: A 3rd Cranial nerve paralysis 1161 - Davidson 21st, 238.3292-H 18th Webers syndrome: Injury to the cerebral peduncle causes ipsilateral oculomotor palsy with contralateral hemiparesis. Nothnagels syndrome: Injury to the superior cerebellar peduncle causes ipsilateral oculomotor palsy and contralateral cerebellar ataxia. Benedikts syndrome: injury to the rednucleus results in ipsilateral oculomotor palsy and contralateral tremor, chorea and athetosis.Major focal brain-stem syndromesName of syndromeSite of LesionsClinical featuresWeberAnterior cerebral peduncle mid-brainIpsilateral 3rd palsy contralateral upper motor neuron 7th palsy contralateral hemiplegiaClaudeCerebral peduncle involving red nucleusIpsilateral 3rd palsy contralateral cerebellar signsParinaudDorsal mild-brain tectumVertical gaze palsy convergence disorders convergence retraction nystagmus pupilary and lid disordersMillard-GublerPonto-medullary junctionIpsilateral 6th palsy ipsilateral 5th lower motor neuron 7th palsy Contralateral hemiplegiaWallenbergLateral medullaIpsilateral 5th, 9th, 10th, 11th palsy ipsilateralHomers syndrome ipsilateral cerebellar signs contralateral spinothatamic sensory loss vestibular disturbance 