The limbic system is vital for one's normal functioning. This system acts as the center of emotions, behavior, and memory. It is also a contributor to the control of reactions to stress, attention, and sexual instincts. It comprises a set of complex structures anatomically divided into the limbic cortex, cingulate gyrus, parahippocampal gyrus, hippocampal formation, dentate gyrus, hippocampus, subauricular complex, septal area, hypothalamus, and amygdala.
The amygdala gets its name from its resemblance to almonds; it is an almond-shaped structure formed by many nuclei sorted into five major groups; basolateral nuclei, cortical-like nuclei, central nuclei, other amygdaloid nuclei, and extended Amygdala.
The amygdala has been implicated in many diseases, such as depression, sleep debt and anger, as well as other neuropsychiatric diseases.
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