The focus of our research is the science of bio-signal fluctuations. Although in the history of physiology and medical sciences, the fluctuations in bio-signals have long been recognized as noises and ignored in analyses, we have revealed that various physiologic regulatory activities are reflected in bio-signal fluctuations, which include fruitful information about the alterations and impairments of the regulatory systems, the signs of ultra-early stage of diseases, and the risk for future disease development and death. The research programs of us cover the entire spectrum of the science of bio-signal fluctuations, including studies of physiologic mechanisms of fluctuations, mathematic theories and algorithms for time series analyses, applications to health care and clinical medicine, and academic-industrial cooperation for development of software and hardware such as wearable sensors and clinical laboratory equipment.

　Even among well-known bio-signals, as-yet-known useful information has been discovered continuously in their fluctuations. Furthermore, this is an exciting time for this field. Advances in wearable bio-signal sensors and information communication technologies are made every day. Big data being built by them seem to require the appropriate methods for analyses and interpretations.

　This is an elegant scientific field fruitful for challenges and enjoys. Welcome to students and post-doctoral fellows from various fields such as medicine, health care, engineering, and computer science. We invite you to visit me to learn with us, collaborate, and challenge your scientific dreams!