Spatial Characteristics of Metacontrast*
- 1 May 1972
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 62 (5) , 690-696
- https://doi.org/10.1364/josa.62.000690
Abstract
The spatial extent of lateral interaction was determined for nonoverlapping equal-energy stimuli in a metacontrast design with targets and masks of constant separation but varying width. The weighting functions derived from these data are wholly negative. Unlike previous estimates of spatial extent in metacontrast, based on experiments in which the separation between target and mask was varied, our weighting functions subtend only about 10′ of visual angle, for both monoptic and dichoptic observations. However, the weighting functions resemble those derived from a wide variety of other psychophysical procedures such as sensitization. The differences of estimates of weighting functions are interpreted in terms of two spatial-lateral-interaction systems. One of these systems may depend critically on the proximity of stimuli; the independence of the spatial extent of the system from target size suggests the involvement of an edge mechanism.Keywords
This publication has 24 references indexed in Scilit:
- On the physiological basis of masking with dotted visual noise1Perception & Psychophysics, 1970
- Model of the function of receptive fields in human vision.Psychological Review, 1970
- Binocular fusion and contour suppressionPerception & Psychophysics, 1970
- Effects of Surround Size and Luminance on Metacontrast*Journal of the Optical Society of America, 1969
- Apparent movement and metacontrast: A note on Kahneman’s formulationPerception & Psychophysics, 1969
- Spatial Resolution by the Human Visual System The Effect of Mean Retinal Illuminance*Journal of the Optical Society of America, 1966
- Relation of Increment Thresholds to Brightness and Luminance*Journal of the Optical Society of America, 1965
- Neural Inhibitory Units of the Eye and Skin Quantitative Description of Contrast Phenomena*Journal of the Optical Society of America, 1960
- Contour Perception, Illusion and Reality*Journal of the Optical Society of America, 1958
- MECHANISMS SUBSERVING SIMULTANEOUS BRIGHTNESS CONTRASTOptometry and Vision Science, 1948