Hippocampus anatomy These limbic structures include the hippocampus, cingulate cortex, olfactory cortex, and amygdala. Paul MacLean once suggested, as part of his triune brain theory, that the limbic structures constitute the neural basis of emotion. While most neuroscientists no longer believe in the concept of a unified "limbic system", these regions are highly interconnected and do interact with one another. Starting at the dentate gyrus and working inward along the S-curve of the hippocampus means traversing a series of narrow zones. The first of these, the dentate gyrus (DG), is actually a separate structure, a tightly packed layer of small granule cells
Eating disorders and memory mechanism has been found in the food-reward system in eating disorder studies. Neurons located in different structures of the medial temporal lobe are what cause the transformation from an egocentric to an allocentric representation in space. The hippocampus generates allocentric representations for long-term memory, and the parietal cortex, retrosplenial cortex, entorhinal cortex, and hippocampus are part of a network that processes allocentric spatial information. The lateral entorhinal cortex carries nonspatial information from the perirhinal cortex to the dorsal hippocampus where it is then combined with the medial entorhinal cortex to create object-place or event-place representations in the hippocampus. Impairment of