Superior colliculus

Definition

The superior colliculus is a paired structure located in the midbrain that plays a crucial role in processing visual information. It helps coordinate eye movements and head turns toward visual stimuli.

5 Must Know Facts For Your Next Test

1. The superior colliculus is involved in the initiation of saccadic eye movements.
2. It receives direct input from the retina and indirect input from the visual cortex.
3. Apart from vision, it also integrates auditory and somatosensory information to create a multisensory map of the environment.
4. Damage to the superior colliculus can result in impaired reflexive eye movements.
5. It works closely with other brain regions like the inferior colliculus and pulvinar nucleus for sensory integration.

Review Questions

• What primary function does the superior colliculus serve in relation to vision?
• How does damage to the superior colliculus affect eye movement?
• Which types of sensory information are integrated by the superior colliculus?

Related terms

Inferior Colliculus: A midbrain structure involved primarily in auditory processing.

Pulvinar Nucleus: A thalamic region that connects with various parts of the visual cortex and helps integrate visual information.

Saccadic Eye Movements: Rapid, jerky movements of the eyes used in scanning the visual field.