<title>Estimation of stereovision in conditions of blurring simulation</title>
The aim of this study was to evaluate the simulation of eye pathologies, such as amblyopia and cataracts, to estimate the stereovision in artificial conditions, and to compare the results on the stereothreshold obtained in artificial and real- pathologic conditions. Characteristic of the above-mentioned real-life forms of a reduced vision is a blurred image in one of the eyes. The blurring was simulated by (i) defocusing, (ii) blurred stimuli on the screen, and (iii) occluding of an eye with PLZT or PDLC plates. When comparing the methods, two parameters were used: the subject's visual acuity and the modulation depth of the image. The eye occluder method appeared to systematically provide h…
Effect of Handedness on Mental Rotation
The impact of the dominant hand on the response time and precision in mental rotational tasks seems to be controversial. The goal of this study was to compare the differences in response times of mental rotation tasks when the task is performed with the dominant or non-dominant hand. In this study, 44 right-handers and 45 left-handers participated in mental rotation tests with 2-D and 3-D figures. Findings indicate that the right-handers had shorter response times than left-handers in tests with both types of figures.
Perception of Biological Motion in Central and Peripheral Visual Fields
Abstract Studies analysing biological motion perception based on reduced number of dots have demonstrated that biological motion can be perceived even when only the lower part of the body is visible or when the number of dots representing the object is reduced. What is the minimal amount of information that enables biological motion to be distinguished from its scrambled version? The results of the current experiment demonstrate that biological motion can be distinguished from its scrambled version when the object is formed of approximately 5 (4.7 ± 0.1) dots. Additionally, we also investigated whether the threshold value for biological motion perception differs in central and peripheral vi…