Volume 32 #2

Contents

1. Tinnitus – contemporary knowledge about its origin, electrophysiological correlates and treatment
2. Eye optics and retinal topography in the nutria (Myocastor coypus)
3. Quantitative study of Poggendorff illusion in school children with normal binocular vision and with strabismus
4. The method of canine odor visualization
5. Precopulatory mechanisms of reproductive isolation between two chromosomal forms of striped hamsters Cricetulus barabensis sensu lato (Rodentia, Cricetinae)
6. Discrimination of sound signals with rippled spectra in on- and low-frequency noise: contribution of compressive nonlinearity and confounding issues
7. The equivalent frequency-tuned filter form for discrimination of spectral pattern of sound signals: Contribution of the lateral suppression and harmonics

Quantitative study of Poggendorff illusion in comparison with regular estimation by sight has been performed in school children of different age. In our study 60 pupils with normal binocular vision and 60 pupils with strabismus were tested. We used printed test charts with different variants of the real position of the test line segment in relation to the reference line segment for quantitative estimation the range in which a subject perceives the segments as located on the same straight line. It has been established that the power of Poggendorff illusion in junior pupils with strabismus is comparable to the power of the illusion in junior pupils with normal binocular vision. Meanwhile the power of Poggendorff illusion decreases with age in pupils with normal binocular vision while reliable age-related dynamics of the power of the illusion in pupils with strabismus was not detected.

Key words: Poggendorff illusion, age dynamics, binocular vision, strabismus

DOI: 10.7868/S0235009218020038

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