convolution of broca

Diagonal band of Broca

The diagonal band of Broca 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.

Along with the Septum Pellucidum the Diagonal Band of Broca is believed to be involved in the generation of theta waves in the hippocampus

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