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Spatial Crowding
Visual crowding is the inability to view a target stimulus distinctly when presented in a clutter. Crowding impairs the ability to discriminate object features and contours among flankers, which in turn impairs people's ability to respond appropriately to the target stimulus. An operational definition of crowding explains what crowding is and how it is different from similar effects such as Visual masking, masking, lateral interaction and surround suppression; effects that make the target more challenging to see as well. There are different criteria that are used to differentiate crowding from these other effects. Firstly, crowding makes it difficult to identify an object but not detecting it among the clutter. Crowded objects are collectively perceived to have high contrast, but they remain indistinct. The wikt:eccentricity, eccentricity of the target and the distance between the target and flankers influence crowding. As the distance between the target and the flankers' increases ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KND + N 2
KND may refer to: Organisations * KND Corporation, operator of radio station WKND, Windsor, Connecticut, US * Democratic National Katarism, political party of Fernando Untoja Choque, Bolivia * Kan Air (ICAO: KND), airline, Thailand * Kindred Healthcare (NYSE: KND), US Places * Kanda Station (Tokyo), JR East station code * Kindu Airport (IATA: KND), Kindu, Democratic Republic of the Congo * Kingswood railway station (National Rail station code: KND), Surrey, England * Niederdollendorf station (DS100, KND), Königswinter, Germany Other uses * ''Codename: Kids Next Door'', US TV cartoon series * Konda language (Papuan) (ISO 639-3 language code: knd) See also * KNDS * KNDS (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visual Masking
Visual masking is a phenomenon of visual perception. It occurs when the visibility of one image, called a target, is reduced by the presence of another image, called a mask. The target might be invisible or appear to have reduced contrast or lightness. There are three different timing arrangements for masking: forward masking, backward masking, and simultaneous masking. In forward masking, the mask precedes the target. In backward masking the mask follows the target. In simultaneous masking, the mask and target are shown together. There are two different spatial arrangements for masking: pattern masking and metacontrast. Pattern masking occurs when the target and mask locations overlap. Metacontrast masking occurs when the mask does not overlap with the target location. Factors affecting visual masking Target-to-mask spatial separation Suppression can be seen in both forward and backward masking when there is pattern masking, but not when there is metacontrast. Simultaneou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eccentricity
Eccentricity or eccentric may refer to: * Eccentricity (behavior), odd behavior on the part of a person, as opposed to being "normal" Mathematics, science and technology Mathematics * Off-Centre (geometry), center, in geometry * Eccentricity (graph theory) of a vertex in a graph * Eccentricity (mathematics), a parameter associated with every conic section Orbital mechanics * Orbital eccentricity, in astrodynamics, a measure of the non-circularity of an orbit * Eccentric anomaly, the angle between the direction of periapsis and the current position of an object on its orbit * Eccentricity vector, in celestial mechanics, a dimensionless vector with direction pointing from apoapsis to periapsis * Eccentric, a type of deferent, a circle or sphere used in obsolete epicyclical systems to carry a planet around the Earth or Sun Other uses in science and technology * Eccentric (mechanism), a wheel that rotates on an axle that is displaced from the focus of the circle described by the wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herman Bouma
Herman Bouma (born 15 March 1934) is a Dutch vision researcher and gerontechnologist. He is considered to be one of the founders of the field of gerontechnology. He spent the majority of his career at the Institute of Perception Research, serving as its director from the mid-1970s until 1994. He subsequently led the Institute for Gerontechnology until 1999. A perceptual law, based on a publication of his in 1970 is named ''Bouma's Law'' in his honour. Career Bouma was born in Harderwijk on 15 March 1934. He obtained a degree in physics from Utrecht University and also partially studied medicine there. In 1959 Bouma started working for the Institute of Perception Research (Dutch:''Instituut voor Perceptie Onderzoek'', IPO), an institute of Philips Research and the Eindhoven University of Technology. In 1965 he obtained his PhD at Eindhoven University of Technology under Jan Frederik Schouten with a thesis titled: ''"Receptive systems mediating certain light reactions of the pupil o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |