See Also: Accessory optic system (AOS)(health)
BJC Health System(health)
VCU Health System(health)
Asante Health System(health)
F.F. Thompson Health System(health)
Covenant Health System(health)
Nebraska Health System(health)
Baptist Health System(health)
PROMINA Health System(health)
Hillcrest Health System(health)

Accessory optic system (AOS) (health)


Region of the vertebrate midbrain to which some optic nerve fibers project. Cells respond to large slowly moving textured patterns and are selective for both direction and speed of motion suggesting they are involved in the computation of global motion. Possibly used for the detection of retinal slip and used in image stabilization. Consists of two sets of retina ganglion cell fibers and three target nuclei in the anterior portion of the midbrain, the dorsal, medial and lateral nuclei.