Diagonal band of Broca

Diagonal band of Broca
Base of brain. (Diagonal band of Broca not labeled, but anterior perforated substance labeled at center.)
Human brainstem, anterior view. (Diagonal band of Broca not labeled, but anterior perforated substance is #5.)
Details
Latin	stria diagonalis
Identifiers
MeSH	A08.186.211.730.885.380
NeuroNames	hier-267
NeuroLex ID	Diagonal band
Dorlands /Elsevier	s_26/12762750
TA
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terms of neuroanatomy [[[d:|edit on Wikidata]]]

The diagonal band of Broca is one of the forebrain nuclei that are derived from the ventral telencephalon during development. This structure forms the medial margin of the anterior perforated substance.

Structure

It consists of fibers that are said to arise in the parolfactory area, the gyrus subcallosus and the anterior perforated substance, and course backward in the longitudinal striae to the dentate gyrus and the hippocampal region.

This is a cholinergic bundle of nerve fibers posterior to the anterior perforated substance. It interconnects the paraterminal gyrus in the septal area with the hippocampus and lateral olfactory area.

Nucleus

The nucleus of diagonal band is a structure in the brain. It projects to the hippocampal formation through the fornix.

Function

Along with the septum pellucidum and medial septal nucleus, the diagonal band of Broca is believed to be involved in the generation of theta waves in the hippocampus.

Its behavior can be altered by nerve growth factor.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)