We know that each of us is unique, but science has struggled to pinpoint where, precisely, our uniqueness resides. Is it in our genes? The structure of our brains? Our genome may determine our eye color and even aspects of our personality. But our friendships, failures, and passions also shape who we are. The question is: how? Sebastian Seung, a dynamic professor at MIT, is on a quest to discover the biological basis of identity. He believes it lies in the pattern of connections between the brain's neurons, which change slowly over time as we learn and grow. The connectome, as it's called, is where our genetic inheritance intersects with our life experience.
With its up to 500 trillion synaptic connections, your brain is easily the most powerful machine in the world. These connections are what create your thoughts, what drive your emotions, and what control your behaviors. Even more incredibly: This amazing machine is constantly changing through a process known as brain plasticity. And you can take advantage of this process to improve and enhance your brain's jaw-dropping powers—at any age.
Dr Michael Mosley and Professor Alice Roberts investigate if male and female brains really are wired differently. New research suggests that the connections in men and women's brains follow different patterns, patterns which may explain typical forms of male and female behaviour. But are these patterns innate, or are they shaped by the world around us?