title: [Optical-geometric characteristics of fragmented figures and thresholds of their wholesome perception in repeated tests].
abstract: Factors that lead to decreasing thresholds across repeated test sessions in Gollin incomplete figure test were investigated. In the first experiment, 4 tests with 5-day intervals and using same test figures, were conducted. Thresholds of recognition in each test and amplitude-frequency characteristics of test images were compared by correlation analysis. In the second investigation, 2 tests with 3-day intervals were conducted. In repeated tests, half figures were familiar to the subjects. In addition, half fragmented figures (both familiar an unfamiliar to the subjects) had such amplitude-frequency characteristics as in the first test. It was found that decreasing of thresholds was primary conditioned by optimization of mechanisms that work with statistical (not object) information.
authors.forename: A V
authors.initials: AV
authors.lastname: Merkul'ev
mesh_terms: D005556:Form Perception / Q000502:physiology*; D006801:Humans; D012684:Sensory Thresholds; D014787:Vision Tests; D014796:Visual Perception / Q000502:physiology*