This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (December 2008)

Brain: Septal nuclei
Latin	nuclei septales
NeuroNames	hier-241

The septal nuclei are structures in the middle anteroventral cerebrum that are composed of medium-size neurons grouped into medial, lateral, and posterior groups. The septal nuclei receive reciprocal connections from the olfactory bulb, hippocampus, amygdala, hypothalamus, midbrain, habenula, cingulate gyrus, and thalamus.

The septal nuclei play a role in reward and reinforcement along with the nucleus accumbens. In the 1950s, Olds & Milner showed that rats with electrodes implanted in this area will self-stimulate repeatedly in order to experience a euphoric feeling (i.e. press a bar to receive electrical current that will stimulate the neurons)^[1].

[edit] References

[edit] External links

• BrainMaps at UCDavis septal%20nuclei

v • d • e Human brain, cerebrum, Interior of the cerebral hemispheres, white matter: commissural fibers and septum (TA A14.1.09.241-271, 569-571, GA 9.828,838-840) Corpus callosum Genu · Splenium · Tapetum · Rostrum Archicortex: Indusium griseum Lamina terminalis Organum vasculosum of the lamina terminalis · Anterior commissure Fornix Columns of fornix · Crus of fornix · Commissure of fornix Septum pellucidum Septal nuclei (Medial septal nucleus, Subfornical organ) · Cave of septum pellucidum

[edit] References

1. OLDS, J., MILNER, P. - Positive reinforcement produced by electrical stimulation of septal area and other regions of rat brain. J Comp Physiol Psychol, 1954, Dec;47(6):419-27.