Term Name:	olivary pretectal nucleus
Synonyms:	nucleus olivaris colliculi superioris (Fuse), nucleus olivaris corporis quadrigemini anterioris, nucleus olivaris mesencephali, nucleus olivaris pretectalis of Fuse, nucleus praetectalis anterior, nucleus praetectalis olivaris
Definition:	Small distinct nucleus in the pretectum of mammals involved in the pupillary light reflect. In rats, it is an olive shaped (anterior) nucleus lying ventral to the brachium of the superior colliculus (Paxinos, The rat nervous system, 2nd ed, 1995, pg. 862). Physiologically, it is identified by neurons sensitive to luminance changes.
Ontology:	Uberon Ontology [UBERON:0002565]