Results 251 to 260 of about 3,580,404 (289)

The Weber Fraction versus Perceived Similarity

Perceptual and Motor Skills, 1999
The Weber fraction type of discrimination outcome means that stimuli of high magnitude are difficult to discriminate. Simultaneous and successive discriminations between two long (high magnitude) lines and also between two short (low magnitude) lines were carried out. Over-all performance on the successive discrimination between the two long lines was
D L, King, G E, Henry, S C, Shanks
semanticscholar   +4 more sources

Just Noticeable Differences and Weber Fraction of Oral Thickness Perception of Model Beverages

Journal of Food Science, 2015
Abstract Rheological properties of beverages contribute considerably to texture perception. When developing new beverages, it is important to have knowledge on the smallest differences of viscosity which a consumer can discriminate. Thickness is the sensory attribute most commonly used to describe the viscosity of
Camacho, S., Dop, M.C., de Graaf, C., Stieger, M.A.   +3 more
openaire   +4 more sources

Modifying weber fraction law to postprocessing and edge detection applications

2008 3rd International Symposium on Communications, Control and Signal Processing, 2008
A postprocessing scheme is proposed to enhance compressed images. The main objective is to obtain improvements that are pertinent to the properties of human visual system. The proposed scheme implements Weber fraction (also called contrast sensitivity) to enhance the appearance of the current block by incorporating information from adjacent blocks. The
Salah Ameer, Otman Basir
openaire   +2 more sources

Profile information improves Weber fraction

The Journal of the Acoustical Society of America, 1984
We measured the ability of observers to detect an increment in the intensity of a 100-ms 1000-Hz sinusoid under two conditions. In the first condition, the observer heard single 1000-Hz sinusoids —either the standard or the standard plus the increment.
David M. Green, Christine R. Mason
openaire   +2 more sources

The Weber fraction and asymmetries in luminance thresholds

Color Research & Application, 2002
AbstractPresented in this article is a method for the determination of the Weber fraction by analyzing data obtained from color‐matching experiments. The method is based on a rigorous analysis of the probability density function derived from discrimination judgments made in the xyY space.
Fernando Carreño, Jesús Manuel Zoido
openaire   +2 more sources

Is The Weber Fraction a Function of Physical or Perceived Input?

Quarterly Journal of Experimental Psychology, 1964
It is well known that a given physical input (e.g. intensity of light or sound, length or weight of an object) does not always give rise to the same sensation. For example, arrow heads affect the perceived length of lines (Muller-Lyer illusion) and size affects the apparent weight of an object (size-weight illusion).
Helen E. Ross, R. L. Gregory
openaire   +2 more sources

GC-MS characterization of n-hexane soluble fraction from dandelion (Taraxacum officinale Weber ex F.H. Wigg.) aerial parts and its antioxidant and antimicrobial properties

Zeitschrift für Naturforschung C, 2017
Abstract A comparative investigation of n-hexane soluble compounds from aerial parts of dandelion (Taraxacum officinale Weber ex F.H. Wigg.) collected during different vegetative stages was carried out. The GC-MS analysis of the n-hexane (unpolar) fraction showed the presence of 30 biologically active compounds.
Ivan, Ivanov, Nadezhda, Petkova, Julian, Tumbarski, Ivayla, Dincheva, Ilian, Badjakov, Panteley, Denev, Atanas, Pavlov   +6 more
openaire   +3 more sources

Weber Fractions for Weight and Mass as a Function of Stimulus Intensity

The Quarterly Journal of Experimental Psychology Section A, 1987
Laboratory simulations of weightlessness have shown that the Weber fraction for mass is higher than that for weight in the range 1000–7000 g. Experiments in the weightless conditions of orbital and parabolic flight have found the same at the 50 g level.
H E, Ross, E E, Brodie
openaire   +3 more sources

WEBER FRACTION ANALOGUES IN SOCIAL PERCEPTION: FURTHER INVESTIGATION

Perceptual and Motor Skills, 1962
John R. Braun, George A. Haven
semanticscholar   +3 more sources

Weber Fraction Analogues in Social Perception

Perceptual and Motor Skills, 1960
L. H. Levy
openaire   +2 more sources