- Vertical saccades originate from burst neurons in the rostral interstitial
nucleus of the medial longitudinal fasciculus (riMLF).
- The riMLF, like PPRF, produces the phasic command.
- Neurons in the interstitial nucleus (INC) convert this to a tonic command
(like the pph for horizontal saccades).
- The phasic and tonic commands combine in the MN's in III & IV n.
- Both sides of the brainstem have neurons that generate upward saccades
and others that generate downward saccades.
- Do neurons on each side do the same thing; i.e. is this a redundant
representation?
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