The investigators will study adaptation of motion perception and manual control in altered gravity, including the effects of a drug (promethazine). The investigators will also study whether promethazine affects motion perceptual thresholds.
Age range
18 Years – 45 Years
Sex
ALL
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The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Percent Change in Roll Tilt Perception After Exposure to Hypogravity
Timeframe: 1 session
Yaw Perceptual Motion Threshold
Timeframe: 2 sessions separated by at least four days; measurements made 2 hrs after ingestion of medication
Roll Perceptual Motion Threshold
Timeframe: 2 sessions separated by at least four days; measurements made 2 hrs after ingestion of medication
Interaural Perceptual Motion Threshold
Timeframe: 2 sessions separated by at least four days; measurements made 2 hrs after ingestion of medication
Percent Change in Manual Control Performance After Exposure to Hypogravity
Timeframe: 1 session