The limbic system is the emotional part of the brain and is responsible for things like excitement, fear, anxiety, memory, and desire. It is primarily composed of four regions: the hypothalamus, the amygdala, the hippocampus, and the cingulate cortex. The hypothalamus controls stress. The amygdala is the key to reducing anxiety, fear, and other negative emotions. The hippocampus is responsible for creating long-term memories, and because its neurons are very sensitive to stress, it often acts as the canary in the coal mine of depression. Lastly, the cingulate cortex controls focus and
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