| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
In this study, we investigated what aspect of hierarchical structure embedded in object motion is used to detect the critical point of shape change of object. The critical point of shape change is the point where the most important movement that causes the whole change of the object shape occurs. We used arm-like artificial point-light displays and conducted several psychophysical experiments and Bayesian simulations. The results show that human observers utilized hierarchical order information to detect the critical point, not the strict positioning of each point guided by the location of their ancestor. We also conducted experiments to examine whether the trajectory of points affects the determination of hierarchical structure (or the perceptual problem “which point was in the highest rank of the hierarchical structure”). The results suggests that smooth trajectory did not help the determination much, and that the grouping process might be important to solve this problem.
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