The Retention of Protective Adaptation to Motion Sickness Induced by Cross - Coupled Angular Accelerations
FLYING PERSONNEL RESEARCH COMMITTEE LONDON (UNITED KINGDOM)
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Two experiments are reported. In the first, designed to assess the retention of adaptation to repeated exposures of graded cross-coupled angular accelerations, eight young men received eight adaptation sessions in alternate directions of rotation over a total period of 24 weeks. The results indicated a steady build-up of savings of protective adaptation as reflected by the progressive reduction in stimulation required to achieve an operationally- defined level of adaptation. The second experiment examined the relationship between the savings of adaptation on the second of two exposures and the time interval between them. Twenty-five young men were assigned to five equal groups matched for motion sickness history. No decline in savings was observed with increasing time intervals. Finally, an attempt was made to integrate the findings of these two experiments into a general theoretical statement concerning the decay of protective adaptation following both single and repeated exposures to an adapting stimulus.
- Stress Physiology