The limbic system

Inside the ridges and grooves of each hemisphere lie a set of structures forming what is known as the limbic system. This system includes the amygdala, hypothalamus, thalamus, and hippocampus. These parts activate our emotions, appetites, instincts, pain and pleasure sensations, and other drives that are essential to survival. The amygdala
activates emotional responses, such as fear or euphoria, while the hypothalamus is the control center for brain-to-body, body-to-brain messages, causing, for example, blood pressure to rise when we are agitated. The thalamus receives auditory and visual sensory signals and relays them to the outer layer of the brain, known as the cerebral cortex, where the information is processed. The hippocampus is critical to learning and remembering spatial layouts. At the very back of the brain lies the cerebellum, which handles movement and balance and, along with the brain stem, is the part of the brain that evolved first, inherited from our primeval ancestors. It keeps us alive by controlling our involuntary body functions, including breathing and digestion.

Source of Information : BRAIN TRAINING BOOST MEMORY, MAXIMIZE MENTAL AGILITY, & AWAKEN YOUR INNER GENIUS