6533b7ddfe1ef96bd1273664
RESEARCH PRODUCT
Transition from self tilt to object tilt during maintained lateral tilt in parabolic flight.
Michaela ReiserJ. WetzigRudolf J. Von Baumgartensubject
Counter rotationgenetic structuresEye MovementsRotationHead tiltParabolic flightPhase (waves)Aerospace EngineeringHypergravityOtolithic MembraneOpticsHumansPhysicsbusiness.industryWeightlessnessHealthy subjectsSpace FlightVestibular Function TestsProprioceptionRetinal imageTilt (optics)Head MovementsLine (geometry)Visual Perceptionsense organsbusinessdescription
Abstract 19 young healthy subjects were subjected to parabolic rollercoaster flight. A horizontal luminous line was seen by the subjects in a headfixed goggle device. During the hypergravic phases of parabolic flight the luminous line seemed to rotate into and during the hypogravic phase against the direction of static head tilt. Ocular counter rotation and activity of the neck position receptors cannot explain these subjective rotations. We conclude that information from the otolith system, converging with visual information within the brain, dislocated the headfixed visual target line. While the retinal image of the luminous line remains unchanged, loading and unloading the otoliths in parabolic flight changes the sensation of self tilt into object tilt, hereby subjectively rotating visual targets such as the luminous line.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1991-01-01 | Acta astronautica |