Abstract
Visual experiences through the televised visual field may be different from realistic viewing conditions. To us the televised visual field seems a "middle" visual world between the real world and the photographic world. However it may involve perceptual phenomenon similar to real situations. Based on this, transformation of shape or shape constancy, presented on TV media was measured by the comparative stimuli series method and the reproduction by hand writing method. Eleven undergraduates worked under normal viewing conditions and five undergraduates under televised conditions. The standard stimulus object was a white square with vertical and horizontal diagonals of 20cm each. The standard square was slanted at 50, 20, 80, 40, 5, 60, 10, 70, 30 and 90 degrees to eye level. The series of comparison stimuli consists of eleven transformed diamonds with vertical diagonals of 1, 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20cm. The standard and the comparison stimuli were laterally separated by 45°. Viewing distance was two meters. Under TV conditions the standard object and a TV camera were set in the audio-visual control room, and the subject observed the televised stimulus of test objects in an adjacent audio-visual studio. The experimental results under normal and the televised conditions are shown in Fig.1. In the televised, almost complete shape constancy existed at 70°, 80°, and 90°, but constancy did not appear when the slant was less than 50°. As for theoretical interest, the scheme of perceptual development as defined by Solley and Murphy (1960) was discussed. A process of "trial and check" seemed to be less active in the TV situation than in the real situation. In normal space "trial and check" may facilitate to differentiate the response system.
