I. Introduction
The brain is one of the human body’s biggest and most complicated organs. It is made up of around 100 billion nerves that communicate through trillions of synapses. The brain is a marvellous three-pound organ that directs all body functions, analyses external information, and embodies the essence of the intellect and soul. Many things are controlled by the brain, including intelligence, creativity, emotion, and memory. The cerebrum, cerebellum, and brainstem comprise the brain, which is protected within the skull. The brain receives information from our five senses: sight, smell, touch, taste, and hearing, and it frequently receives information from many senses at the same time. It assembles the messages for us in a meaningful way and can retain the information in our memory. The brain controls our thoughts, memory, and speech, as well as the movement of our arms and legs and the operation of many of our body’s organs.