Assoc. Prof. Pharm Dr. Alena Sumova, DSc. is head of the Laboratory of Biological Rhythms at the Institute of Physiology of the Czech Academy of Sciences. She is the Chair of the Council of the Institute of Physiology, CAS. In addition, she holds the position of scientific secretary in the European Society of Biological Rhythms. She is interested in chronobiology (i.e. cyclic events in living organisms), neurophysiology, and neuroendocrinology.