we also know that BRAIN is the head of the human nervous system and is complex in human organs and it is also a very complicated organ to manage in the human body.                  The human brain controls the conscious and unconscious and controllable and uncontrollable activities. Such as, breathing, digestion, heart beat, sleeping, yawning.                    In the human brain there are 50-100 billion neurons. The cells in the human brain can send about 100 trillion signals at once.            how brain differentiate sounds? The brain deals complex things and sensory things, while coming to the hearing activities, the ear plays an important role to convert vocal language in to the sound waves. The sound waves enter to the ear and travel to the narrow passage way called ear cana...