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 the temporal lobes and adjacent structures like the hypothalamus, amygdala, and hippocampus are important in memory as well as emotion, appetite regulation, motivation, and perception, and are therefore implicated. Reduced cerebral blood flow to these areas have also been associated with impairments in complex visual memory, enhanced information processing and visuospatial ability. Individuals with AN have been reported to have prolonged exposure to high levels of corticosteroids, a class of chemicals involved in things such as stress and behaviour, and prolonged exposure to corticosteroids has been associated with impairments in memory and learning. The hippocampus is an area of the