Brachium of Left Superior Colliculus (Brachium colliculi superioris sinister)
Educational content only — not medical advice.
Anatomy
The brachium of the left superior colliculus is a slender fascicle extending from the lateral geniculate body and optic tract into the superior colliculus and pretectal area, mediating visual orienting reflexes and saccadic eye movements.
Clinical notes
Carries afferent fibers of the pupillary light reflex to the pretectum; lesions impair consensual and direct pupillary reflex responses.
Related structures
Educational references
FAQ
What is the role of the Brachium of Left Superior Colliculus?
The brachium of the left superior colliculus is a slender fascicle extending from the lateral geniculate body and optic tract into the superior colliculus and pretectal area, mediating visual orienting reflexes and saccadic eye movements.
Why is the Brachium of Left Superior Colliculus clinically important?
Carries afferent fibers of the pupillary light reflex to the pretectum; lesions impair consensual and direct pupillary reflex responses.
Source & license
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