Introduction  

The human brain is one of the most complex organ in the human body.The brain is made up of many parts and all these parts work together as a team. Different parts of the brain are responsible for different things and also for coordinating and performing specific functions.

Drugs can harm important brain areas that are necessary for life-sustaining functions and can drive the compulsive drug abuse that marks addiction

The cerebral cortex, which is divided into areas that control specific functions. Different areas process information from our senses, enabling us to see, feel, hear, and taste. The front part of the cortex, the frontal cortex or forebrain, is the thinking center of the brain; it powers our ability to think, plan, solve problems, and make decisions.