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1986 Fiscal Year Final Research Report Summary

Analysis of dorsal light tilt reaction and cerebellar activities in carp during aircraft parabolic-flight weightlessness

Research Project

Project/Area Number 60480119
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 環境生理学(含体力医学・栄養生理学)
Research InstitutionNagoya University

Principal Investigator

MORI Shigeo  Res. Inst. Environ. Med., Nagoya Univ., 環境医学研究所, 助教授 (00023656)

Co-Investigator(Kenkyū-buntansha) USUI Shiro  Dept. Inform. & Computer Sci., Toyohashi Univ. of Technol., 情報工学, 教授 (40023337)
TAKABAYASHI Akira  Res. Inst. Environ. Med., Nagoya Univ., 環境医学研究所, 助手 (00126872)
WATANABE Satoru  Res. Inst. Environ. Med., Nagoya Univ., 環境医学研究所, 教授 (00021361)
Project Period (FY) 1985 – 1986
KeywordsSpace Shuttle / Microgravity / Parabolic flight / Visual-vestibular interaction / Carp / 鯉 / 背光反射 / 小脳脳波
Research Abstract

The dorsal light tilt reaction (DLTR) of carp and electrical activity of the cerebellum were examined under parabolic-flight low gravity. This project belongs to a series of preliminary experiments for our proposal of "space motion sickness" research for the Space Shuttle mission of Japan (Spacelab-J) which was originally scheduled in 1988 but changed later to 1991 after the accident of Challenger. Since such parabolic-flight application to scientific research had never been performed in Japan until the present project was realized, an evaluation of capability for the aircraft chosen (Mitsubishi MU-300) also involved in this research. The conclusion and results obtained are as follows:
1. About 20 seconds of duration with a microgravity below 0.05 Gz could be attained for each parabolic flight. The duration and gravity level may be satisfactorily long and low enough to advance some kinds of preliminary studies for scientific research in space.
2. A completely light-dependent reaction with a rather high speed of the tilting (DLTR) was a characteristic feature of the intact carp exposed to the parabolic-flight low gravity. It indicates unbalanced visual-vestibular interaction for the posture control due to loss of the vestibular input. Possible modification of DLTR pattern will be examined during the prolonged weightlessness in space.
3. A power spectral analysis of the cerebellar activity under microgravity showed enhancement of the power at the frequency ranges below 8 Hz and between 12-25 Hz. Possible recovery in the activity will be followed in the space mission.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 森滋夫: マイクログラビティ応用学会会報. 3(No.4). 4-7 (1986)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 森滋夫: 第3回宇宙利用シンポジウムプロシーディング. 123-126 (1986)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 森滋夫: 名古屋大学環境医学研究所年報. 37. (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mori,S.: Proceedings of 1986 International Symposium on Biological Sciences in Space(Nagoya). (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mori, S.: "Analysis of dorsal light tilt reaction and cerebellar activity in carp during parabolic-flight weightlessness using aircraft." Bulletin of The Japan Society of Microgravity Application,(in Japanese). 3 (No. 4). 4-7 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mori, S. et al.: "Parabolic-flight experiments using a compact aircraft. 1. Observation of dorsal light tilt reaction in carp." Proceedings of 3rd Space Utilization Symposium (Tokyo), (in Japanese). 123-126 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mori, S. et al.: "Study on posture control and adaptation mechanism under weightlessness. XXVI. Analysis of dorsal light tilt reaction and cerebellar activity in carp during parabolic-flight low gavity." Annuals of The Research Institute of Environmental Medicine, Nagoya University, (in Japanese). 37. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mori, S. et al.: "Behavior and brain activity of carp during parabolic-flight low gravity" Proceedings of 1986 International Symposium on Biological Sciences in Space (Nagoya). (1987)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1988-11-10  

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