How the embryonic nervous system is assembled and the adult brain is modified depend on both genes and the environment - experiences such as learning and memory that can radically change the brain's wiring or neuronal function. Professor Spitzer discusses his studies that have provided a new look at how neuronal wiring is assembled in the developing brain and the impact that environment has on continually shaping the brain later in life. Recorded on 10/06/2014. (#28621)