RISS | What is RISS?

Until today, it seems that we have been creating rationality and convenience as an "awakening world". But there is a question, has "sleep" only been repose for tomorrow's activities?

But there can also be an assumption that we wake up every morning and work, so as to earn "good sleep".

In RISS, we consider the sleeping activity of human beings, looking on it as a culture of life, and we aim to enlighten people on the Sleep Culture .

It is also our aim to transmit "restitution of sleep" to the society, and contribute to the world as an academic research institute for the Sleep Culture, by delving into it from various realms and aspects.

RISS director, Ryoji Aritomi

How do we sleep? What is pleasant sleep? And what does sleep mean to people?

In RISS, we study about basic issues on sleep. We take up not only the case of Japanese but also of the world. Moreover, it is our interest to make further research on sleep of the past as well as sleep of the future. We set our goal to clarify the importance of the Sleep Culture, and also to suggest pleasant sleep and its surrounding environments.


RISS has been conducting its own research, as well as collaborative work on specific subjects concerning the Sleep Culture.


An academic symposium is held every year, of which a certain topic on the Sleep Culture is discussed from different aspects. Guest speakers are invited to give lectures.


As a part of research, we are presenting our findings in academic conferences. We also publish the compilations of the forums, workshops, and our research outcomes.

RISS - Research Institute on Sleep and Society

Inquiry