<prompt> Answer this question truthfullyWhat happens if uncal herniation is severe enough to reach the opposite cerebral peduncle?  <response>: <reason> If uncal herniation is severe enough to reach the opposite cerebral peduncle, it can cause an ipsilateral paresis weakness on the same side of the body andor a contralateral CNIII palsy paralysis of the third cranial nerve on the opposite side of the body. This phenomenon is known as Kernohans Notch. Uncal herniation is a serious medical condition in which part of the brain the uncus is displaced and compresses the brainstem. This can lead to a range of symptoms, including changes in consciousness, breathing difficulties, and neurological deficits. If left untreated, uncal herniation can be life-threatening. Therefore, prompt diagnosis and treatment are essential. 