Throughout our lives, the brain remains flexible and responsive to the outside world. In addition to receiving signals from the outside world, the brain allows us to form memories and learn from our experiences. Many brain functions are accompanied at the cellular level by changes in gene expression. Epigenetic mechanisms such as histone modification and DNA methylation stabilize gene expression, which is important for long-term storage of information.

Follow the link for a video discussing the epigenetic link between child abuse and suicide risk. If you click round this site you will also find an introduction to epigenetics and some fun games, which explain various aspects of genetics.