superior colliculus

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Either of two small hillock-shaped bumps on the tectum (the roof of the midbrain), above and in front of the inferior colliculi, receiving some optic tract nerve fibres that bypass the lateral geniculate nucleus, involved in processing spatial aspects of visual information and eye movements in the direction of visual attention. The four colliculi are collectively called the corpora quadrigemina. superior colliculi pl. [From Latin superior higher, from super above + colliculus a small hill from collis a hill]

Subjects: Psychology.

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