微小重力環境下における空間識形成

• 肥塚 泉

  聖マリアンナ医科大学耳鼻咽喉科学教室

書誌事項

タイトル別名

• SPATIAL ORIENTATION UNDER MICROGRAVITY

抄録

On Earth, humans are constantly exposed to the gravity. During head and body tilts, the otolith organs sense changes in head orientation with respect to the gravitational vertical. These graviceptors also transduce transient linear acceleration generated by translational head motion and centripetal acceleration during rotation about a distant axis. When individuals are rotated at a constant velocity in a centrifuge, they sense the direction of the summed gravitational and centripetal acceleration as the vertical in the steady state. Consequently they experience a roll-tilt of the body when upright and oriented either left-ear-out or right-ear-out. This perception of tilt has been called the somatogravic illusion. Under the microgravity, the graviceptors no longer respond during static tilt of the head or head and body, but they are still activated by linear acceleration. Adaptation to weightlessness early in space flight has been proposed to entail a reinterpretation of the signals from the graviceptors (primarily the otolith organs), so that on return to Earth pitch or roll of the head with respect to the vertical is sensed as fore-aft or left-right translation. In this review, formulation of the spatial orientation on the earth and under microgravity was described.

収録刊行物

• 耳鼻咽喉科展望

  耳鼻咽喉科展望 49 (5), 224-229, 2006

  耳鼻咽喉科展望会

キーワード

• 空間識
• 耳石器
• 宇宙酔い
• 微小重力
• 速度蓄積機構

詳細情報

• CRID: 1390001204952852480
• NII論文ID: 130003975378
• DOI: 10.11453/orltokyo1958.49.224
• ISSN: 18836429
• ISSN: 03869687
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可