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The 4-4 rule

This is a technique to remember the location of cranial nerve nuclei easily.The last four cranial nerve nuclei ie 12,11,10,9 are in medulla.Then 8,7,6,5 are in pons.Cranial nerve 4 is at level of inferior colliculus of midbrain and cr. nerve 3 at level of superior colliculus.This helps in LOCALISATION OF LESIONS.