CASPER will examine the sleep patterns of ISS crewmembers by monitoring heart rates and information provided in a questionnaire. This information will help determine what might be causing any sleep disturbances and develop countermeasures.Principal Investigator(s)
University College Dublin, Dublin, , Ireland
University of Limerick, Limerick, , Ireland
European Space Agency (ESA)Sponsoring Organization
Information PendingResearch Benefits
Information PendingISS Expedition Duration
September 2006 - April 2007Expeditions Assigned
14Previous ISS Missions
The objective of the CASPER (Cardiac Adapted Sleep Parameter Electrocardiogram Recorder) experiment is to test and evaluate a method of monitoring sleep disturbance and sleep stability in weightlessness. CASPER combines objective physiological data and subjective inputs. Physiological data is obtained through a specially adapted vest, worn by the astronaut, with embedded sensors and cabling that connects ECG (Electrocardiogram) electrodes, for measuring heart rate, to a PDA for storing the heart rate data. Subjective inputs are obtained via a questionnaire, which runs on the same PDA. A questionnaire is completed both prior to and after each sleep period that the heart rate is measured.
Data collected on this mission can help to establish and distinguish the reasons and patterns of astronaut sleep disruption and facilitate the development of relevant countermeasures to monitor and ensure astronaut sleep stability during long term space flight.
Information PendingEarth Applications
Information PendingOperational Protocols
O-Griofa M. The use of heart rate and heart rate variability as a marker for sleep. 55th International Astronautical Congress, Vancouver, Canada; 2004