Structures
Weber syndrome is consistent with damage to this level of the brainstem.
What is the midbrain.
The contralateral hemiparesis in Weber syndrome is this type of motor neuron lesion, evidenced by hyperreflexia, spasticity, and positive Babinski sign.
What is an upper motor neuron (UMN) lesion.
Weber syndrome results from damage to the ______ midbrain.
What is ventromedial midbrain.
This tract projects to the cranial nerves and unilateral damage may result in contralateral lower face weakness and tongue deviation towards the weak side.
What is the corticobulbar tract.
This structure is involved in motor control and reward pathways, and when damaged can cause parkinsonian rigidity.
What is the substantia nigra.
In Weber syndrome, damage to CN III (oculomotor nerve) affects the muscles of the eye, causing this classic eyelid droop.
What is ptosis.
CN III (oculomotor nerve) exits through this space in the ventral midbrain.
What is the interpeduncular fossa.
Damage to CN III (oculomotor nerve) would not cause impairments to this movement of the eye.