system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What's so special about the eye muscles that someone with locked-in syndrome can still usually move their eyes, while all other voluntary muscles are paralyzed?

Was thinking about this and did some cursory googling but can't really find an explanation. Why those muscles and no others?
gpt
It has to do with where damage is. The oculomotor nerve (cranial nerve 3) controls some eye movement and eyelid movement and is higher in the brainstem. Cranial nerves and other nerves further down are not spared.