The aerospace projects described on this website grew out of research carried out by Dr. Steven Moore on functional aspects of the vestibulo-ocular reflex, which acts to stabilize vision during the rapid head movements associated with locomotion. We are particularly interested in acquisition of head and eye movements during 'free-range' locomotion; that is, as subjects go about their typical daily activities.
Galvanic Vestibular Stimulation (GVS)
GVS uses electrical stimulation (+/- 5 mA maximum current) of the vestibular labyrinths via large surface electrodes placed behind each ear to generate illusory sensations of motion, and postural and ocular reflexes. Our recent research has focused on using GVS as a model of vestibular deconditioning following microgravity exposure. Both pseudorandom and head-coupled GVS waveforms were found to induce decrements in posture, locomotion and gaze consistent with that observed following both short (shuttle) and long-term (ISS) missions. In addition, 5 veteran astronauts who tried the GVS device stated that the sensations of motion and unsteadiness were very similar to that experienced on the day of landing. We are working with NASA and the NSBRI to develop GVS technology to provide high-fidelity training simulations.
