NROC64H3 Lecture Notes - Lecture 4: Internuclear Ophthalmoplegia, Saccade, Reticular Formation
Document Summary
Bs sends out a pulse signal required to drive saccade onset comes from two distinct areas in the brainstem: 1. Pontine reticular formation: horizontal saccades: contains excitatory burst neurons (ebns) source of the high frequency burst of discharges responsible for driving the lateral and medial rectus muscle to move the eye look left/right, 2. Mesencephalic reticular formation- vertical saccades: contains vertical burst neurons (vbns) source of the high frequency burst of discharges responsible for driving the inferior and superior recti in charger of lateral movements of eye (up/down) Inhibitory burst neurons (ibns) in the caudal pontine reticular formation work with the. Excitatory burst neurons (ebns) to silence the antagonist motoneurons. If we want to look a (cid:272)e(cid:396)tai(cid:374) (cid:449)a(cid:455), (cid:449)e do(cid:374)(cid:859)t (cid:449)a(cid:374)t all the (cid:373)us(cid:272)les to (cid:272)o(cid:374)t(cid:396)a(cid:272)t all at o(cid:374)(cid:272)e because that stops you from moving your eyes need some relaxed and others contracted. Ibn and ebn together in order to look in different directions.
