30 Gaze Palsies
- look to right: begin in PPRF signal to CN 6 nucleus, innervate LR
- MLF: CN 6 nerve fiber to contralateral CN III
- PPRF next to MLF and CN 6 nucleus
INO
- left INO: left MLF damaged, can't gaze right
- move left: everything ok
- move right: midline
- gaze right
- LR of right eye ok
- MLF damaged: left eye can't adduct
- left INO
- left INO: left eye can't gaze right
- right INO: right eye can't gaze left
CN 6 Palsy
PPRF
- no PPRF: can't initiate gaze to affected side
- both eyes can't gaze right, opposed to CN 6 (only right eye can't gaze right)
One and Half
Frontal Eye Field
- normal gaze: right and left FEF both pushing eyes equally
- lesion: remove activation of one side, other side dominates
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