Artificial gravity: head movements during short-radius centrifugation
| Autor: | Kathleen H. Sienko, Carol C. Cheung, Jessica Kavelaars, Heiko Hecht, Laurence R. Young, Lisette E. Lyne |
|---|---|
| Přispěvatelé: | Other departments |
| Rok vydání: | 2001 |
| Předmět: |
Adult
Male Coriolis Force medicine.medical_specialty Adolescent genetic structures Motion Sickness media_common.quotation_subject Motion Perception Illusion Aerospace Engineering Centrifugation Nystagmus Optics Physical medicine and rehabilitation Nystagmus Physiologic Heart Rate medicine Humans media_common Gravity Altered Semicircular canal business.industry Reflex Vestibulo-Ocular Darkness medicine.disease Adaptation Physiological Motion sickness medicine.anatomical_structure Evaluation Studies as Topic Head Movements Artificial gravity Vestibular nystagmus Vertical nystagmus Female Vestibule Labyrinth medicine.symptom Weightlessness Countermeasures business Tilt (camera) Geology |
| Zdroj: | Acta astronautica, 49(3-10), 215-226. Elsevier Limited |
| ISSN: | 0094-5765 |
| DOI: | 10.1016/s0094-5765(01)00100-x |
| Popis: | Short-radius centrifugation is a potential countermeasure to long-term weightlessness. Unfortunately, head movements in a rotating environment induce serious discomfort, non-compensatory vestibulo-ocular reflexes, and subjective illusions of body tilt. In two experiments we investigated the effects of pitch and yaw head movements in participants placed supine on a rotating bed with their head at the center of rotation, feet at the rim. The vast majority of participants experienced motion sickness, inappropriate vertical nystagmus and illusory tilt and roll as predicted by a semicircular canal model. However, a small but significant number of the 28 participants experienced tilt in the predicted plane but in the opposite direction. Heart rate was elevated following one-second duration head turns. Significant adaptation occurred following a series of head turns in the light. Vertical nystagmus, motion sickness and illusory tilt all decreased with adaptation. Consequences for artificial gravity produced by short-radius centrifuges as a countermeasure are discussed. Grant numbers: NCC 9-58. c 2001. Elsevier Science Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect