PMID: 1206570Nov 1, 1975Paper

Contrast constancy: deblurring in human vision by spatial frequency channels

The Journal of Physiology
M A Georgeson, G D Sullivan

Abstract

The perception of contrast was measured in humans by a technique of subjective contrast-matching, and was compared with contrast sensitivity as defined by threshold measures. 2. Contrast-matching between different spatial frequencies was performed correctly (especially at frequencies above 5 c/deg) despite the attenuation by optical and neural factors which cause large differences in contrast thresholds. 3. Contrast-matching between single lines of different widths was also veridical, and was not limited by the spatial integration (Ricco's Law) present at threshold. Adaptation to gratings altered the appearance of lines, and this could be best understood in Fourier terms. 4. The generality of these results was shown by matching the contrast of pictures which had been filtered so that each contained a one octave band of spatial frequencies. 5. Within the limits imposed by threshold and resolution, contrast-matching was largely independent of luminance and position on the retina. 6. Six out of eleven astigmatic observers showed considerable suprathreshold compensation for their orientation-specific neural deficit in contrast sensitivity. 7. These results define a new property of vision: contrast constancy. It is argued that spati...Continue Reading

Citations

Feb 15, 2001·Proceedings of the National Academy of Sciences of the United States of America·Y SasakiS Marret
Aug 6, 2011·AJNR. American Journal of Neuroradiology·A MirzajaniM Tavan
Jan 1, 1981·Biological cybernetics·G J Burton
May 2, 1979·Biological cybernetics·S Marcelja
Feb 1, 1993·Vision Research·B ChenD R Williams
Jan 1, 1991·Vision Research·J B Mulligan, D I MacLeod
Jan 1, 1991·Vision Research·M W GreenleeJ P Harris
Jan 1, 1988·Vision Research·L M MäättänenB Nienhuis
Jan 1, 1988·Vision Research·W H SwansonH R Wilson
Jan 1, 1987·Vision Research·M A Georgeson
Jan 1, 1986·Vision Research·A Bradley, I Ohzawa
Jan 1, 1986·Vision Research·F Mac CanaW Lovegrove
Jan 1, 1985·Vision Research·W H Swanson, H R Wilson
Jan 1, 1985·Vision Research·A R Biondini, M L de Mattiello
Jan 1, 1984·Vision Research·D R Badcock
Jan 1, 1983·Vision Research·D Sagi, S Hochstein
Jan 1, 1981·Vision Research·J GottesmanG E Legge
Jan 1, 1979·Vision Research·M W Cannon
Jan 1, 1979·Vision Research·F L Kitterle, T R Corwin
Jan 1, 1978·Vision Research·J E Mayhew, J P Frisby
Jun 14, 2005·Psychonomic Bulletin & Review·Geoffrey R Loftus, Erin M Harley
Mar 1, 2006·Perception & Psychophysics·Tatsuto Takeuchi
May 1, 1989·Perception & Psychophysics·V KlymenkoC H Hsieh
Dec 1, 1981·Perception & Psychophysics·W MartensR H Cormack
Oct 1, 1992·Perception & Psychophysics·J D Victor, M M Conte
Jun 1, 1981·Perception & Psychophysics·D O Bowker, M B Mandler
Dec 1, 1988·Perception & Psychophysics·B G BreitmeyerM C Williams
Apr 1, 1985·Perception & Psychophysics·D Sagi, S Hochstein
Oct 1, 1995·Perception & Psychophysics·G Schouten, F J Blommaert
Jul 1, 2004·Optical Review·John S WernerJoseph L Hardy
May 1, 1983·Documenta Ophthalmologica. Advances in Ophthalmology·D S Loshin, D M Levi
Mar 1, 1993·The International Journal of Neuroscience·V ZemonJ Camisa
Feb 13, 2016·Brain Topography·Bruce C HansenDave Ellemberg
Jan 26, 2016·Vision Research·Colm McGoniglePeter M Allen
Oct 1, 1989·Perceptual and Motor Skills·G Moraglia
Feb 3, 2007·Trends in Cognitive Sciences·Thomas A Busey, Geoffrey R Loftus
Jan 1, 1991·Vision Research·M W Cannon, S C Fullenkamp
Jan 1, 1988·Vision Research·D A PollenL D Jacobson
Dec 3, 2014·Current Biology : CB·Koen V HaakStephen A Engel

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Journal of Neurology, Neurosurgery, and Psychiatry
J Sjöstrand, M Abrahamsson
The International Journal of Neuroscience
V ZemonJ Camisa
© 2022 Meta ULC. All rights reserved