pretectum

Function

• it is an area involved in mediating pupillary light reflex.

Structure

• the narrow, transversely oriented rostral zone of the tectum mesencephali
• it is bounded rostrally by the habenular trigone, caudally by the superior colliculus & laterally by the pulvinar of the thalamus.

Afferents

• the pretectal area contains several nuclei that receive fibers from the optic tract

Efferents

• Edinger-Westphal nucleus

More general terms

• brain structure

Additional terms

• Edinger-Westphal nucleus
• habenular trigone
• optic tract
• tectum mesencephali; corpora quadrigemina

Component of

• mesencephalon (midbrain)