| Project/Area Number |
07610093
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
実験系心理学
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| Research Institution | Shizuoka Institute of Science and Technology |
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Principal Investigator |
MIYAOKA Tetsu Shizuoka Institute of Science and Technology, Department of Computer Science, Associate Professor, 理工学部, 助教授 (00111815)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1995: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Tactile sensation / Psychophysics / Fine surface-texture discrimination / Difference threshold / Absolute threshold / Mechanoreceptor / Neural computation |
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| Research Abstract |
This study consists of three researches. The first research was a theoretical one in wihch the fine surface-texture discrimination was situated in the tactile information processing system. The second research was an experiment designed to prove the validity of the amplitude information hypothesis, in which it was asserted that the subjects discriminated the fine surface texures using the amplitude information of surface unevenness. The third research was composed of two experiments. The purpose of this research was to investigate the spatial summation effects and the skin temperature effects on the discrimination ability of fine surface textures.
The first research revealed that the tactile information processing system was classified into four sub-systems which showed mutually independent processing of the information. The fine surface-texture discrimination system was one of the four subsystems. In the second research the experiment of ridge height discrimination was performed. If the subjects discriminated the ridge heights using the amplitude information of the stimuli, the values of the difference thresholds of the ridge heights were the same as the difference threshold values of fine surface-textures. The results of the experiment supported the amplitude information hypothesis. The third research showed that the clear spatial summation was observed in the fine surface-texture discrimination tasks and that there existed little temperature dependent changes in the difference thresholds of fine surface-texture discrimination tasks.
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