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1992 Fiscal Year Final Research Report Summary

Visual localization of object and locomotive behavior in the congenitally blind after surgery

Research Project

Project/Area Number 03451015
Research Category

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

Allocation TypeSingle-year Grants
Research Field Psychology
Research InstitutionUniversity of the Sacred Heart

Principal Investigator

TORII Shuko  University of the Sacred Heart Psychology, Prof., 文学部, 教授 (50015012)

Co-Investigator(Kenkyū-buntansha) TORII Toshiko  Japan Women's University, Psychology, Assoc. Prof., 人間社会学部, 助教授 (70060671)
Project Period (FY) 1991 – 1992
KeywordsThe early blind after operation / Congenital cataract / Mirror-image / Visual localization / Restricted visual field / Depth perception / 歩行行動 / 視空間
Research Abstract

We have been following up the recovering process of the visual activities of a lady(MO,14 years old) and a lady(ToM,20 years old), who were born blind with corneal disease and congenital cataract, respectively.
Main results obtained so far as follows:
(1) MO could see only light until she received corneal transplantation at the age of 4(left eye). While she continued visual learning with us since the second transplantation (left eye,10 years old), she has gradually gained functions to identify color, 2-D shape on a white ground and 3-D solids on a table. Her visual activity to locate an object in space has much improved, although it has left something to be trained. Especially, an image in a mirror caused difficulty. When she looked at the mirror-image of herself for the first time ('89.12.28, it was 2 months after of the 2nd transplantation to the left eye), she searched not only the surface of the mirror by touching,but also the space behind the mirror by going to the back of it. She could not locate objects reflected by the mirror. When she succeeded in locating an object reflected in the mirror for the first time('91.3.1), it was not her own body, but that of another person. It was after 2 years from the onset of the experiment that she succeeded in locating reflect-ed images of herself.
(2) ToM could see light and hand movement until she received the operation for removal of congenital cataract at the age of 9(both eyes). While she continued visual learning with us, her visual space has gradually expanded. For example, she is now able to identify colored things from the distance of 2-3m.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 鳥居 修晃: "認知の発達 ー先天性視覚障害者の開眼手術後の認知の発達ー" 歩行訓練研究. 6. 3-11 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 望月 登志子: "映像認知における色彩の効果 ー彩色画と無彩色画の比較を通じてー" 日本女子大学紀要 人間社会学部. 第2号. 151-160 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mochizuki.T,& Torii.S: "Perception of mirror image in a case of the blind after surgery." International Journal of Psycholsgy. 27. 37 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鳥居 修晃,望月 登志子: "視知覚の形成1 ー開眼手術後の定位と弁別ー" 培風館, 276 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鳥居 修晃(編著): "視覚障害と認知" 放送大学教育振興会, 198 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Umeze H., Torii S. & Uemura Y.: "Activity of sign system of the early blind after operation (2)." Japanese Journal of Psychonomic Science. vol.9,No.2. 73-84 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mochizuki T. & Torii S.: "Perception of mirror image in a case of the blind after surgery." International Journal of Psychology. Vol.27. 37 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Torii S. & Mochizuki T.: Baifu-kan. Formation of Visual Perception (1) (in Japanese), 276 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Torii S.(Ed.): The Society for the Promotion of the University of the Air. The Visually Handicapped and Their Cognitive Activity (in Japanese)., 198 (1993)

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

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Published: 1994-03-24  

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