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Another integrative part of the limbic system, the amygdala, which is the deepest part of the limbic system, is involved in many cognitive processes and is largely considered the most primordial and vital part of the limbic system.
The hippocampus is anatomically connected to parts of the brain that are involved with emotional behavior, including the septal area, the hypothalamic mammillary bodies, and the anterior nuclear complex in the thalamus. MacLean proposed that the associated structures of the limbic lobe be included in what he termed as the limbic system. [15]
The entorhinal cortex (EC) is a major part of the hippocampal formation of the brain, and is reciprocally connected with the hippocampus. [1]The hippocampal formation, which consists of the hippocampus, perirhinal cortex, the dentate gyrus, the subicular areas and the EC forms one of the most important parts of the limbic system.
Amygdala (limbic system) (limbic lobe) Central nucleus (autonomic nervous system) Medial nucleus (accessory olfactory system) Cortical and basomedial nuclei (main olfactory system) Lateral and basolateral nuclei (frontotemporal cortical system) Extended amygdala. Stria terminalis. Bed nucleus of the stria terminalis; Claustrum; Basal ganglia ...
The border (Latin limbus = border) was named the limbic lobe by Paul Broca. The limbic lobe is the main part of the limbic system. The hippocampus lines the posterior edge of the lobe. Other limbic structures include the cingulate cortex, the olfactory cortex, and the amygdala.
Other sources see the insula as a part of the temporal lobe. [9] It is also sometimes grouped with limbic structures deep in the brain into a limbic lobe. [citation needed] As a paralimbic cortex, the insular cortex is considered to be a relatively old structure.
The amygdala is an almond-shaped group of nuclei found deep and medially within the temporal lobes of the brain. Known to be the area of the brain responsible for emotional reaction, but plays an important role in processing of memory and decision making as well. It is part of the limbic system.
'arch'; pl.: fornices) is a C-shaped bundle of nerve fibers in the brain that acts as the major output tract of the hippocampus. The fornix also carries some afferent fibers to the hippocampus from structures in the diencephalon and basal forebrain. The fornix is part of the limbic system. While its exact function and importance in the ...