This interview with Dr. Erik Kandel focuses on memory, and how memories are formed by the increase in the strength of synapses between neurons and consequential alteration of genes. Dr. Kandel is a leading figure in research on memory and neuroplasticity. See link below:
http://video.google.com/videoplay?docid=-6962604448570511609&q=tvshow%3ACharlie_Rose&pl=true