STS047-204-006 (12 - 20 Sept 1992) --- Dr. Mamoru Mohri, payload specialist representing Japan's National Space Development Agency (NASDA), participates in an experiment designed to learn more about Space Adaptation Syndrome (SAS). The experiment is titled, "Comparative Measurement of Visual Stability in Earth and Cosmic Space." During the experiment, Dr. Mohri tracked a flickering light target while eye movements and neck muscle tension were measured. This 45-degree angle position was one of four studied during the eight-day Spacelab-J mission.

STS042-203-024 (22-30 Jan. 1992) --- Astronaut David C. Hilmers (right), STS-42 mission specialist, assists European Space Agency (ESA) payload specialist Ulf Merbold with the visual stimulator experiment on the Space Shuttle Discovery's middeck. This particular test is part of an ongoing study of the Space Adaptation Syndrome (SAS). Seated in a stationary mini-sled, Merbold (or any other subject for this test) stares at an umbrella-shaped rotating dome with a pattern of colored dots on its interior. While observing the rotating dome, the subject turns a knob to indicate his perception of body rotation. The strength of circular vection is calculated by comparing the signals from the dome and the knob. The greater the false sense of circular vection, the more the subject is relying on visual information instead of otolith information.

Space Shuttle Endeavour (STS-47) onboard photo of Japanese Payload Specialist Dr. Mamoru Mohri participating in Comparative Measurement of Visual Stability in Earth Cosmic Space experiment to learn more about Space Adaptation Syndrome (SAS).

STS041-02-015 (6-10 Oct. 1990) --- A 35mm scene showing astronauts Robert D. Cabana (right), STS-41 pilot, and Bruce E. Melnick, mission specialist, participating in a detailed supplemental objective for STS-41 involving retinal photography. The hypothesis of this experiment is that retinal photographs taken on orbit will show evidence of increased intracranial pressure (ICP) and the evidence of increased ICP and the development of Space Adaptation Syndrome (SAS) will be correlated. SAS has been a subject of on-orbit analysis since the early days of space shuttle.

S73-34171 (9 Aug. 1973) --- Scientist-astronaut Owen K. Garriott, Skylab 3 science pilot, serves as test subject for the Skylab ?Human Vestibular Function? M131 Experiment, as seen in this photographic reproduction taken from a television transmission made by a color TV camera aboard the Skylab space station in Earth orbit. The objectives of the Skylab M131 experiment are to obtain data pertinent to establishing the validity of measurements of specific behavioral/physiological responses influenced by vestibular activity under one-g and zero-g conditions; to determine man?s adaptability to unusual vestibular conditions and predict habitability of future spacecraft conditions involving reduced gravity and Coriollis forces; and to measure the accuracy and variability in man?s judgment of spatial coordinates based on atypical gravity receptor cues and inadequate visual cures. Dr. Garriott is seated in the experiment?s litter chair which can rotate the test subject at predetermined rotational velocity or programmed acceleration/decelerational profile. Photo credit: NASA

STS078-396-015 (20 June - 7 July 1996) --- Payload specialist Jean-Jacques Favier, representing the French Space Agency (CNES), prepares a sample for the Advanced Gradient Heating Facility (AGHF) while wearing instruments that measure upper body movement. The Torso Rotation Experiment (TRE) complements other vestibular studies that measure differences in the way human beings react physically to their surroundings in microgravity. This is a typical Life and Microgravity Spacelab (LMS-1) mission scene, with several experiments being performed. Astronaut Susan J. Helms, payload commander, assists Favier in the AGHF preparations. Astronaut Richard M. Linnehan (bottom right), mission specialist, tests his muscle response with the Handgrip Dynamometer. Astronaut Thomas T. (Tom) Henricks (far background), mission commander, offers assistance.

STS034-08-007 (18-23 Oct. 1989) --- Astronaut Ellen S. Baker, an STS-34 mission specialist and medical doctor, conducts a medical examination on astronaut Franklin R. Chang-Diaz, mission specialist, on the middeck of the Earth-orbiting space shuttle Atlantis. Dr. Baker was monitoring Chang-Diaz's blood flow. The scene was recorded on film with a 35mm camera.Photo credit: NASA or National Aeronautics and Space Administration

STS058-202-002 (18 Oct.-1 Nov. 1993) --- Astronaut Rhea Seddon, STS-58 payload commander, spins the Spacelab Life Sciences (SLS-2) rotating chair as payload specialist Martin J. Fettman serves as test subject. The two joined five NASA astronauts for fourteen days of medical research aboard the Earth-orbiting space shuttle Columbia. Photo credit: NASA

S83-35768 (18-24 June 1983) --- Astronaut Sally K. Ride, mission specialist for STS-7, uses a screw driver in order to clean out an air filtering system in the mid-deck of the Earth-orbiting Space Shuttle Challenger. Dr. Ride's constant wear garment bears some extras -- a cartoon of 35 busy astronauts around a Space Shuttle and the acronym TFNG, below which is written, "We deliver!" TFNG stands for thirty-five new guys, referring to the 1978 class of astronaut candidates (ASCAN) from which Dr. Ride and three of her crew members hail. The tiny two-word declarative in white lettering refers to the successful deployment of two communications satellites. This photograph was made with a 35mm camera.