Hiroyuki Ohmura

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Purpose: The purpose of the present study was to evaluate the fracture strengths of a metal-based complete maxillary denture with a metal framework (that did not extend to the residual ridge crest), which was made from a cobalt-chromium alloy with high elastic modulus. Materials and Methods: Sample newly designed metal frameworks of metal-based complete(More)
Geometric transformation theory which claims the correspondence between the stroboscopic motion and the geometric transformation of stimulus-figures in two- or three-dimensional rotation was examined from the viewpoint of stimulus configurational feature theory which stresses the role of parallel lines for three-dimensional stroboscopic rotation. It was(More)
It was tested whether "subjective" contours have functional effects similar to real contours on stroboscopic motion. The probability of seeing motion between a pair of subjective contour stimuli was compared with that between a pair of the corresponding real contour stimuli. The results were as follows: (1) For both identical shapes and disparate shapes,(More)
Stroboscopic motion between two triangles in a symmetrical relation was studied in terms of probability of seeing rotation in depth as affected by configurational properties of the triangles, the axis of symmetry and the position of a viewing point. Symmetry was found to be primarily important for seeing the rotation. Corresponding line-elements of the(More)
The likelihood of stroboscopic motion between different contour combinations was obtained under temporal conditions (duration, ISIs). Three kinds of contour figures were prepared; the real, the subjective and the control. Two stimulus figures for such combinations were chosen from these three; one as the first stimulus and the other as the second. The(More)
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