As an addiction specialist, I often emphasize the importance of understanding the brain's intricate mechanisms to better grasp the nature of addiction. One of the most critical players in this process is the nucleus accumbens, a small yet powerful structure located deep within the brain. Often referred to as the brain's "reward centre," the nucleus accumbens plays a pivotal role in motivation, pleasure, and reinforcement learning. In this blog, we’ll explore its functions, its role in addiction, and how it influences behaviour .