anterior perforated substance

an·te·ri·or per·fo·rat·ed sub·stance

[TA]

a region at the base of the brain through which numerous small branches of the anterior and middle cerebral arteries (lenticulostriate arteries) enter the depth of the cerebral hemisphere; it is bordered medially by the optic chiasm and anterior half of the optic tract rostrally and laterally by the lateral olfactory stria; its anteromedial part corresponds to the olfactory tubercle.

Synonym(s): substantia perforata anterior [TA], locus perforatus anticus, olfactory area, substantia perforata rostralis

anterior perforated substance

The portion of the rhinencephalon lying immediately anterior to the optic chiasm. It is perforated by numerous small arteries.

See also: substance