Final answer:
Uncal herniation is associated with the finding of one dilated pupil, due to compression of the third cranial nerve in this type of cerebral herniation.
Step-by-step explanation:
The type of cerebral herniation associated with the finding of one dilated pupil is Uncal herniation. When part of the brain, typically the medial temporal lobe, is displaced over the tentorium cerebelli, it can cause the third cranial nerve to be compressed, which may lead to pupil dilation on the affected side, known as an uncal herniation. This is a specific subtype of transtentorial herniation and is a neurosurgical emergency.