Also found in: Dictionary, Thesaurus.
Related to superior Colliculi: basal ganglia, cerebral peduncle, fovea, pineal gland, pulvinar, pons, red nucleus, Crus cerebri
Two small rounded elevations situated on the dorsal aspects of the midbrain, just below the thalamus. Besides receiving fibres from each other, they receive a small number of axons from the optic tracts and serve as a relay centre for movements of the eyes, head and neck in response to visual and other stimuli. Singular: colliculus. Syn. superior corpora quadrigemina. See brachium; retinotectal pathway; pretectum; Parinaud's syndrome.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann