The Forebrain is the largest part of the brain and covers the anterior part. This area is divided into sections such as the cerebral hemispheres, the limbic system, the thalamus and hypothalamus section, and the corpus callosum. These hemispheres are divided into four lobes which include the frontal, parietal, occipital, and temporal. The forebrain has many functions and because of its size it is extremely vulnerable to severe damage which can alter your personality. The functions of the forebrain include, cognitive control, sensory and motor function, it regulates temperature, controls the reproductive functions, affects eating, sleeping, and finally the display of emotions. As you can tell by the number of purposes this section serves, damage can be ultimately life changing and controls a large amount of your health and how comfortable you are.