2019 Fiscal Year Final Research Report
Parallelism and non-parallelism of lines in visual and haptic spaces: A test of Euclidean hypothesis
| Project/Area Number |
15H03465
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2020-03-31
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| Keywords | 空間知覚 / 並木実験 / 視覚 / 触運動感覚 |
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| Outline of Final Research Achievements |
We constructed alleys by using two rods on the horizontal plane and estimated geometries of visual and tactile-kinesthetic spaces,separately. The rods were set to appear to neither diverge nor converge, to be separated by the same lateral distance, or to be perpendicular to the frontal plane. There was no significant difference on locus of the alleys among the three instructions. This result suggests that either space is Euclidean. The geometry was also estimated from visual angles between near end points of the rods and between the far ends. The results suggested that visual space is Euclidean under the assumption that visual angle is perceptually magnified; tactile-kinesthetic space is not described by either Euclidean, hyperbokic, or elliptic geometry.
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| Free Research Field |
知覚心理学
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| Academic Significance and Societal Importance of the Research Achievements |
視空間と触運動空間がどのような幾何学によって記述されるのか検討した．約2メートルの長さの2竿を用いて，特定の知覚的基準（平行性，等距離性，直交性）を満たすように，各空間の奥行方向に2竿の方向を調整させた．その結果，視空間はユークリッド空間によって記述できるが，触運動空間はユークリッド空間，楕円的空間，双曲的空間のいずれによっても記述できなかった．これまで視空間の幾何学に関する半世紀以上の研究に終止符を打つとともに，触運動空間の幾何学に関する研究の糸口を与えるものである．
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