Preparation of Computer Programs for the Representation of Optical Illusion Figures

The author has prepared the three computer programs for the representation of optical illusion figures. These programs are written by BASIC language and are applied to personal computer Model MZ-80B2 with MZ-80P6 (printer) and MZ-80BF (floppy disc drive). The first program is applied to the representation of stimulus figures of Vertical-horizontal illusion, when the comparison stimuli change in either ascending or descending order. The second program is used for the representation of stimulus figures of Muller-Lyer illusion. And the third program is used when the Poggendorff illusion figures are represented in the situation that the lower oblique lines as comparison stimuli move upwards