Fornix (brain)

Fornix (6), sagittal section

The fornix ( Latin fornix "arching", "arching") is a structure of the limbic system in the cerebrum .

The fornix runs as a mighty strand of fibers above the roof of the 3rd ventricle . It connects the hippocampus with the corpus mamillare and is thus part of the Papez circle . In the commissura fornicis , nerve fibers connect the right and left hemispheres of the cerebrum.

Functionally, it is involved in the storage of memory contents from the short-term to the long-term memory and thus plays a role in learning .

It does not convey specific information, but rather selects and modulates the function of the hippocampus formation through various neurotransmitters ( dopamine , noradrenaline , serotonin and acetylcholine ).