... EXPERIMENTS AND RESEARCHES . ... SLEEP experiment is a part of the science research activities to be performed aboard the ISS RS by Frank de Winne, ESA astronaut of Belgian nationality in the frame of the ODISSEA Project. ... For automatic recording of the subject's motor activity and light exposure in the cosmonaut location area . ... Information recorded in Actilight watch (subject's motor activity and the light in the crew location area) and Sleep Logbook (feelings during sleep). ...