Research seminars are an important vehicle through which researchers can stay abreast of the most cutting-edge developments in various fields of brain research. BSI Seminar Series (BSS) is a "flagship" seminar series at BSI. The speakers playing a leading and exciting role in their current field of research are invited mostly from abroad. BSS is open to scientific community inside and outside of RIKEN. Thus, the BSS provides a unique opportunity for young scientists in Japan to have discussion with distinguished scientists from the world on their cutting-edge research achievements. We sincerely hope to see you in BSS.