@inproceedings{oai:jaxa.repo.nii.ac.jp:00013579,
 author = {渡辺, 行雄 and 將積, 日出夫 and 坪田, 雅仁 and 片山, 直美 and Watanabe, Yukio and Shojaku, Hideo and Tsubota, Masahito and Katayama, Naomi},
 book = {宇宙利用シンポジウム　第23回　平成18年度, Space Utilization Research: Proceedings of the Twenty-third Space Utilization Symposium},
 month = {Mar},
 note = {The origin of Vestibular Evoked Myogenic Potentials (VEMP) is considered to include the sacculus as a sense receptor of vertical linear acceleration. In this paper, we report the influences of VEMP amplitude and latency to changes in the acceleration of gravity during a parabolic aircraft flight experiment. The parabolic flight was performed between an altitude of 7,000 and 9,500 meters and the detailed time course was as follows: (1) horizontal flight (1 G), (2) rapid ascending at 45 deg pitch up causing 2 G for 20 sec, (3) free falling causing microgravity for 20 sec, (4) descending at 35 deg pitch down causing 1.5 G. VEMP was recorded for 60 sec from the start of flight condition two to the end of flight condition four, during which the stimulating intensity was 105 dBnHL, and the stimulating frequency, 5 Hz. Seven healthy adults (six males and one female) who had no history of vertigo, deafness, or ear disease were selected as subjects, and VEMP was recorded from the left sternocleidomastoid muscles when the left ears were stimulated. The VEMP amplitude during microgravity was significantly greater than that during excessive gravity. By contrast, there were no differences among the three conditions which regard to latent VEMP. Changes in the sensitivity of the peripheral vestibular organ, i.e., sacculus, and/or the neural pathway of VEMP might increase the amplitude of VEMP during the microgravity condition. Furthermore, parabolic flight would be appropriate stimulation for evaluating saccular function on brief changes in vertical acceleration., 資料番号: AA0063349081},
 pages = {285--286},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)},
 title = {放物線飛行の耳石頚反射に及ぼす影響},
 year = {2007}
}