Poggendorfo iliuzijos stiprumo ir akių dominavimo įvertinimas ; The strenth of Poggendorff illusion and the evaluation of the dominance of the eyes
There are many research on visual perception illusions but still there are many questions how visual system create illusory perception. There is no only theory and only mechanism which could explain the basic depth illusions. There is presumption that different illusions determine by different factors, which ones could be related with the structure of the eye and the neural interactions in retina, other ones – with superior level – the processing of cognitive information. The Poggendorff illusion is not the exception. The goal of this work is to explore the strenth of Poggendorff illusion while changing the angle between sloping and vertical lines and the distance between vertical lines, and its relation with the dominance of the eye. The tasks: 1. To measure the strength of Poggendorff illusion while changing the angle between sloping and vertical lines. 2. To measure the strength of Poggendorff illusion while changing the distance between vertical lines. 3. To explore the relation between the strength of Poggendorff illusion while changing the angle between sloping and vertical lines and the distance between vertical lines. 4. To compare the strength of Poggendorff illusion between left and right dominant eye having subjects. The Poggendorff illusion was given by the computer-based program. The subjects have to find the continuation of the sloping line while changing the angle between sloping and vertical lines and the distance between vertical lines. 135 subjets (17 men, 118 women, age interval 18-40) participated in the research. The results show that the strength of Poggendorff illusion grow while decrease the angle between sloping and vertical lines and increase the distance between vertical lines. There is the correlation between the strength of Poggendorff while changing the angle between sloping and vertical lines and the distance between vertical lines. It is possible to discriminate subjects by dominance left and right eye from the strength of Poggendorff while changing the angle between sloping and vertical lines and the distance between vertical lines.