. >> rose: episode one of th dharl charlie rose brain series 2 underwritten by the symons fodation coming up. captioning sponsor by rose communications from our studios in new york city, this is charlie rose. >> rose: it has been said that the brain will be to the 21st century what the at tom was to the 20th century. tonight we continue our explo ration of this fascinating organ with our second charlie rose brain series. in our first season we studied brain science. this year we expand our journey to pro i would have a parallel view of brain disorders. for each program and disorder, scientists and researchers have studied the disease from both a medical and scientific perspective will join us. we will discuss disorders with patients, some are physicians. and finally we'll explore our increasing knowledge of brain disorders and how it has enriched our understanding of e human mind. for tonight's inaugural episode, we study how neurological, psychiatric and addictive disorders result from disturbances in different neural systems. our understanding of brain disorders has evolved greatly thro