The making of memory. Part 1, What makes a memory?.

The first in a three-part series looking at some of the latest scientific research into how memory works, with contributions from some of the leading experts in the field. This part focuses on how the brain stores the complexity of rich and detailed experiences which stay with us throughout our lives. What are the chemical, biological and genetic underpinnings of memory - the role of brain cells, neurotransitters and specific areas such as the hippocampus? What role do genes play and can science manipulate this to ur advantage with drugs? We also look at Alzheimer's and assess if we are any closer to understanding and preventing it.