The diagonal band of Broca interconnects the amygdala and the septal area. It is one of the olfactory structures. It is situated upon the inferior aspect of the brain.[1] It forms the medial margin of the anterior perforated substance.[2]
It was described by the French neuroanatomist Paul Broca.[3]
Two structures are often described in this brain regions, namely the nuclei of the vertical and horizontal limbs of the diagonal band of Broca (nvlDBB and nhlDBB, respectively). nvlDBB projects to the hippocampal formation through the fornix and it is the second largest assembly of cholinergic neurons in the basal forebrain whereas nhlDBB projects to the olfactory bulb and it does not have a significant population of cholinergic neurons.[3]
^Gould, Douglas J.; Brueckner-Collins, Jennifer K.; Fix, James Douglas (2015). High-Yield Neuroanatomy (5th ed.). Philadelphia: Wolters Kluwer. p. 4. ISBN978-1-4511-9343-5.
^O'Keefe, John; Andersen, Per; Morris, Richard; David Amaral; Tim Bliss (2007). The hippocampus book. Oxford [Oxfordshire]: Oxford University Press. p. 480. ISBN978-0-19-510027-3.